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Lesson 3 · Workbook p. 26

Tape Diagrams and Double Number Lines

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Mateo and his sister Lucia earned $45 raking leaves. Lucia worked longer, so they split the money in a ratio of 4 to 5. How much money does each of them get?

In this video

  • Draw a tape diagram when you know the total.
  • Use a tape diagram when you know the difference.
  • Line up both amounts on a double number line.

Try it together

Two friends share $56 in a ratio of 3 to 4. How much does each friend get?
Show the answer
$24 and $32
3 + 4 = 7 boxes. $56 ÷ 7 = $8 per box. 3 boxes = $24 and 4 boxes = $32. Check: $24 + $32 = $56.

Ask, don't tell

“How many boxes are there in all?”

“If 9 boxes are worth $45, what is 1 box worth?”

The workbook these videos go with

Math for Parents – 6th Grade, Book 2: Ratios & Percents. Picture-first lessons on ratios, rates, unit prices, and percents, with “Ask, don't tell” prompts on every page, worked examples, real-world missions, and answer keys with coaching notes, so you can help even if it's been years since you learned it.

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