MathBored

Virginia SOL Mathematics Textbook

Grade 6 Workbook — Chapter 4: Fractions, Decimals, and Percents

SOL 6.NS.1 · Companion to Textbook Chapter 4

Each page below is one Canva page. Headings are sized for direct paste: page title as H1, section labels as H2. Figures referenced by filename live in ../figures/.


PAGE 1 — Chapter opener

Chapter 4 · Fractions, Decimals, and Percents

Standard 6.NS.1

In this chapter you will:

Words to know: percent · hundred grid · benchmark percent · simplest form · rational number · repeating decimal

Calculator note: every part of 6.NS.1 is assessed without a calculator. Do all of this chapter by hand.

Number limits for this chapter: decimals through thousandths · fraction denominators of 12 or less, or factors of 100 (2, 4, 5, 10, 20, 25, 50, 100) · no more than four numbers compared at a time · all numbers positive


PAGE 2 — Percent means per hundred

4.1 Percent as Parts per Hundred

FIGURE: fig1-hundred-grid-35.png (full width) [10 by 10 grid, 35 squares shaded]

Fill in the blanks.

The word percent means per ____________.

One small square of a hundred grid is ______%.

A whole hundred grid is ______%.

35%=00100=0.0035\% = \frac{\phantom{00}}{100} = \underline{\phantom{0.00}}

Write the percent shaded.

Shaded squares out of 100 5 50 62 100 41
Percent

Percent unshaded. If 35%35\% of a grid is shaded, what percent is unshaded? ______


PAGE 3 — Models that are not divided into 100

Scaling Up to Hundredths

FIGURE: fig3-twenty-five-parts.png (left half) [square in 25 equal parts, 9 shaded]

Scale each comparison up to hundredths, then write the percent.

Model Fraction Out of 100 Percent
9 of 25 parts shaded 925\tfrac{9}{25}
3 of 20 parts shaded
7 of 10 parts shaded
6 of 25 parts shaded
1 of 2 parts shaded

Estimate with benchmarks.

FIGURE: fig2-percent-benchmarks-line.png (full width) [0 to 1 number line with 0%, 25%, 50%, 75%, 100% above and 0, 1/4, 1/2, 3/4, 1 below]

A bar shaded a little past halfway is about ______%.

A bar shaded just short of halfway is about ______%.

A bar shaded a little past three quarters is about ______%.

Challenge. In a hundred grid, exactly half of one small square is shaded. What percent is shaded? ______


PAGE 4 — Exit ticket 4.1

Exit Ticket · Lesson 4.1

Name: ________________________ Date: ____________

  1. A hundred grid has 41 squares shaded. What percent is shaded? ______

  2. A square divided into 25 equal parts has 6 parts shaded. What percent is shaded? ______

  3. A bar is shaded to a point just short of halfway. Estimate the percent shaded. ______

  4. Explain what 100%100\% tells you about a whole.



PAGE 5 — Decimals and percents

4.2 Decimals and Percents

FIGURE: fig4-decimal-percent-shift.png (full width) [place-value chart showing the two-place shift for 0.37 and 0.008]

Decimal to percent: multiply by 100. The point moves 2 places RIGHT. Percent to decimal: divide by 100. The point moves 2 places LEFT.

Decimal to percent.

a) 0.730.73 b) 0.070.07 c) 0.60.6 d) 1.051.05
e) 0.580.58 f) 0.90.9 g) 0.1250.125 h) 0.0080.008

Percent to decimal.

a) 45%45\% b) 3%3\% c) 250%250\% d) 12.5%12.5\%
e) 24%24\% f) 5%5\% g) 80%80\% h) 0.5%0.5\%

Check yourself. A percent less than 100%100\% becomes a decimal ____________ than 1. A percent greater than 100%100\% becomes a decimal ____________ than 1.


PAGE 6 — Watch the placeholder zero

Error Hunt · Decimals and Percents

Three of these are FALSE. Mark each, then write the correction.

Statement True or false? Correction
0.5=5%0.5 = 5\%
0.08=8%0.08 = 8\%
9%=0.99\% = 0.9
0.245=24.5%0.245 = 24.5\%
0.035=35%0.035 = 35\%

Apply it. A phone battery reads 0.850.85 of full charge. Write it as a percent. ______

A sales tax rate is listed as 0.060.06. Write it as a percent. ______

Explain. Why does 8%8\% need a placeholder zero when you write it as a decimal?



PAGE 7 — Exit ticket 4.2

Exit Ticket · Lesson 4.2

Name: ________________________ Date: ____________

  1. Write 0.620.62 as a percent. ______

  2. Write 7%7\% as a decimal. ______

  3. Write 0.0350.035 as a percent. ______

  4. Explain why changing a decimal to a percent moves the decimal point two places to the right.



PAGE 8 — Fractions and percents

4.3 Fractions and Percents

FIGURE: fig5-hundred-grid-three-fifths.png (right half) [hundred grid in five bands of two columns, three bands shaded, 60 squares]

Strategy 1: build an equivalent fraction with denominator 100. Works for 2, 4, 5, 10, 20, 25, 50, 100. Strategy 2: divide the numerator by the denominator, then change the decimal to a percent.

Build to hundredths.

35=00100=000%720=00100=000%\frac{3}{5} = \frac{\phantom{00}}{100} = \underline{\phantom{000}}\% \qquad \frac{7}{20} = \frac{\phantom{00}}{100} = \underline{\phantom{000}}\%

325=00100=000%750=00100=000%\frac{3}{25} = \frac{\phantom{00}}{100} = \underline{\phantom{000}}\% \qquad \frac{7}{50} = \frac{\phantom{00}}{100} = \underline{\phantom{000}}\%

Divide instead.

Fraction 58\tfrac{5}{8} 38\tfrac{3}{8} 18\tfrac{1}{8} 78\tfrac{7}{8}
Decimal
Percent

Repeating cases. Fill in the exact percents.

13=0000%23=0000%16=0000%56=0000%\frac{1}{3} = \underline{\phantom{0000}}\% \qquad \frac{2}{3} = \underline{\phantom{0000}}\% \qquad \frac{1}{6} = \underline{\phantom{0000}}\% \qquad \frac{5}{6} = \underline{\phantom{0000}}\%


PAGE 9 — Percent to fraction

From Percent Back to Fraction

Write each percent over 100, then simplify.

Percent Over 100 Simplest form
45%45\% 45100\tfrac{45}{100}
70%70\%
24%24\%
85%85\%
8%8\%
150%150\%

Memory table. Fill in every blank.

Fraction 12\tfrac{1}{2} 14\tfrac{1}{4} 34\tfrac{3}{4} 15\tfrac{1}{5} 110\tfrac{1}{10} 120\tfrac{1}{20} 125\tfrac{1}{25} 150\tfrac{1}{50}
Percent

Apply it. Malik made 12 of his 16 free throws. Fraction in simplest form: ______ Percent: ______


PAGE 10 — Exit ticket 4.3

Exit Ticket · Lesson 4.3

Name: ________________________ Date: ____________

  1. Write 34\tfrac{3}{4} as a percent. ______

  2. Write 60%60\% as a fraction in simplest form. ______

  3. Write 78\tfrac{7}{8} as a percent. ______

  4. Describe two different ways to change 320\tfrac{3}{20} into a percent. Show that both give the same answer.



PAGE 11 — All three forms

4.4 Converting Among All Three Forms

FIGURE: fig6-triple-number-line.png (full width) [three aligned number lines from 0 to 1 labeled with fractions, decimals, and percents]

When you are unsure, go through the DECIMAL. It connects to both other forms.

Complete every row. Fractions in simplest form.

Fraction Decimal Percent
0.20.2
710\tfrac{7}{10}
35%35\%
18\tfrac{1}{8}
25\tfrac{2}{5}
0.550.55
0.040.04
920\tfrac{9}{20}
48%48\%
2122\tfrac{1}{2}

PAGE 12 — Choosing a form

Which Form, and Why?

Match each job to the best form. Write F, D, or P.

Job Best form
Reporting a survey result on a poster
Lining up place value to order numbers
Computing exactly with thirds and sixths

Rounding a repeating decimal.

512=0.41600000512=0000%\frac{5}{12} = 0.41\overline{6} \approx \underline{\phantom{00000}} \qquad \frac{5}{12} = \underline{\phantom{0000}}\%

160000016=0000%\frac{1}{6} \approx \underline{\phantom{00000}} \qquad \frac{1}{6} = \underline{\phantom{0000}}\%

Apply it. A survey reports that 0.3750.375 of a class walks to school.

Percent: ______ Fraction in simplest form: ______

Explain. Which form would you put in a headline, and why?



PAGE 13 — Exit ticket 4.4

Exit Ticket · Lesson 4.4

Name: ________________________ Date: ____________

Give the two missing forms. Fractions in simplest form.

  1. 0.650.65 → percent ______ fraction ______

  2. 35\tfrac{3}{5} → decimal ______ percent ______

  3. 4%4\% → decimal ______ fraction ______

  4. Explain the steps to get from a fraction to a percent when the denominator is 8.



PAGE 14 — Comparing with a common form

4.5 Comparing and Ordering

Convert all the numbers to ONE form first. Then compare.

FIGURE: fig7-ordering-number-line.png (full width) [0 to 1 number line with 2/5, 0.45, 48%, 1/2 plotted and labeled]

Complete the conversion table, then order.

Original 0.450.45 12\tfrac{1}{2} 48%48\% 25\tfrac{2}{5}
As a percent

Least to greatest: _______________________________________________

Fill in <<, >>, or ==.

a) 0.25  140.25 \ \square \ \tfrac{1}{4} b) 23  65%\tfrac{2}{3} \ \square \ 65\% c) 0.09  9%0.09 \ \square \ 9\%
d) 18  15%\tfrac{1}{8} \ \square \ 15\% e) 0.6  350.6 \ \square \ \tfrac{3}{5} f) 910  0.95\tfrac{9}{10} \ \square \ 0.95

PAGE 15 — Ordering practice

Order and Justify

Order from LEAST to GREATEST.

  1. 0.80.8, 34\tfrac{3}{4}, 78%78\%, 78\tfrac{7}{8}


  2. 0.30.3, 14\tfrac{1}{4}, 35%35\%


  3. 1141\tfrac{1}{4}, 120%120\%, 1.31.3


Order from GREATEST to LEAST.

  1. 12\tfrac{1}{2}, 0.550.55, 45%45\%, 35\tfrac{3}{5}


Benchmarks.

  1. Which is closer to 12\tfrac{1}{2}: 0.450.45 or 0.60.6? ______ Distances: ______ and ______

  2. Which is closest to 11: 0.890.89, 1112\tfrac{11}{12}, or 95%95\%? ______

Justify. Write a full justification for problem 1: name your strategy, show the common form, then state the order.




PAGE 16 — Exit ticket 4.5

Exit Ticket · Lesson 4.5

Name: ________________________ Date: ____________

  1. Which is greater, 38\tfrac{3}{8} or 0.40.4? ______

  2. Order least to greatest: 0.60.6, 58\tfrac{5}{8}, 58%58\%


  3. Which is closer to 12\tfrac{1}{2}: 49\tfrac{4}{9} or 0.60.6? ______

  4. Name the strategy you would use to compare 712\tfrac{7}{12} and 0.60.6, explain why, and give the answer.



PAGE 17 — Past 100% and below 1%

4.6 Percents Above 100% and Below 1%

FIGURE: fig8-grids-145-percent.png (full width) [one fully shaded hundred grid labeled 100% beside a grid with 45 squares shaded labeled 45%, braced as 145%]

Complete the table.

Percent Decimal Fraction or mixed number, simplest form
100%100\%
150%150\%
200%200\%
250%250\%
145%145\%
175%175\%
108%108\%

FIGURE: fig9-one-square-partly-shaded.png (right half) [one small square of a hundred grid divided into four quadrants with one quadrant shaded]

Percents below 1% — write each as a decimal.

a) 0.8%0.8\% b) 0.25%0.25\% c) 0.05%0.05\% d) 0.7%0.7\%

PAGE 18 — Sorting across the whole range

Above, Below, or Exactly One Whole?

Sort each value into the correct column: less than one whole, exactly one whole, more than one whole.

0.9%100%1.60.09250%10.002108%0.9\% \qquad 100\% \qquad 1.6 \qquad 0.09 \qquad 250\% \qquad 1 \qquad 0.002 \qquad 108\%

Less than one whole Exactly one whole More than one whole

Order from least to greatest. 0.9%0.9\%, 1%1\%, 0.090.09


Watch out. 0.5%0.5\% = ____________ as a decimal. 0.50.5 = ______% as a percent.

Explain. A savings account pays 0.75%0.75\%. Why is that less than one percent?


Explain. A town's population is now 140%140\% of its population in 2000. What does that tell you?



PAGE 19 — Exit ticket 4.6

Exit Ticket · Lesson 4.6

Name: ________________________ Date: ____________

  1. Write 225%225\% as a decimal. ______

  2. Write 0.7%0.7\% as a decimal. ______

  3. Which is greater, 0.4%0.4\% or 0.040.04? ______

  4. Explain how a model can show a percent greater than 100%100\%.



PAGE 20 — Chapter 4 review, part 1

Chapter 4 Review

Part A · Percent from a model

  1. A hundred grid has 68 squares shaded. Percent shaded: ______

  2. A rectangle in 20 equal parts has 9 shaded. Percent shaded: ______

  3. A bar is shaded a little past the one-quarter mark. Estimate: ______

  4. a) One full grid plus 60 squares of a second grid: ______ b) Half of one small square: ______

Part B · Decimals and percents

  1. Decimal to percent: a) 0.420.42 ______ b) 0.090.09 ______ c) 1.61.6 ______ d) 0.0040.004 ______

  2. Percent to decimal: a) 65%65\% ______ b) 7%7\% ______ c) 210%210\% ______ d) 0.5%0.5\% ______

  3. Is 0.080.08 greater than, less than, or equal to 8%8\%? ______ Justify:


Part C · Fractions, mixed numbers, and percents

  1. As a percent: a) 45\tfrac{4}{5} ______ b) 78\tfrac{7}{8} ______ c) 13\tfrac{1}{3} ______ d) 94\tfrac{9}{4} ______

  2. Simplest form: a) 55%55\% ______ b) 4%4\% ______ c) 150%150\% ______


PAGE 21 — Chapter 4 review, part 2

Chapter 4 Review (continued)

Part D · All three forms

  1. Complete each row. Fractions in simplest form.
Fraction Decimal Percent
0.750.75
350\tfrac{3}{50}
12%12\%
  1. 1181\tfrac{1}{8} → decimal ______ percent ______

Part E · Comparing and ordering

  1. Least to greatest: 0.650.65, 58\tfrac{5}{8}, 63%63\%, 23\tfrac{2}{3}


    Justification: _______________________________________________

  2. Greatest to least: 710\tfrac{7}{10}, 0.720.72, 68%68\%, 34\tfrac{3}{4}


  3. Fill in: a) 25  0.4\tfrac{2}{5} \ \square \ 0.4 b) 56  85%\tfrac{5}{6} \ \square \ 85\% c) 1.2  115%1.2 \ \square \ 115\%

Part F · Application and reasoning

  1. Quiz scores: Ana 1720\tfrac{17}{20}, Ben 0.860.86, Cruz 84%84\%. Highest to lowest:


  2. Use a benchmark: is 712\tfrac{7}{12} greater or less than 12\tfrac{1}{2}? ______ Why?


  3. Why is 0.7%0.7\% much smaller than 7%7\%? Decimals: 0.7%=0.7\% = ______ and 7%=7\% = ______


  4. A sign reads "This year's sales are 125%125\% of last year's." What does that mean?


    125%=125\% = ______ as a decimal and ______ as a mixed number.


Canva production notes