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P6 Math ยท Chapter 15brightbit.net/worksheets

Model Method & Working Backwards

Name: ______________________Class: ________Date: ____________Score: ____ / 10
  1. 1.

    Ali spent 1/3 of his money and had $48 left. How much did he start with?

    Answer: ____________________________________

  2. 2.

    I think of a number, multiply by 3, subtract 7, and get 20. What is the number?

    Answer: ____________________________________

  3. 3.

    A shopkeeper sold 2/5 of her apples in the morning and 30 in the afternoon. She had 20 left. How many apples at the start?

    Answer: ____________________________________

  4. 4.

    John gave 1/4 of his stickers to Mary and 1/3 of the remainder to Bob. He had 20 left. How many did he start with?

    Answer: ____________________________________

  5. 5.

    A number is doubled, then 5 is added, then divided by 3, giving 7. Find the number.

    Answer: ____________________________________

  6. 6.

    Ann had $x. She spent $40 on books and then doubled the rest. She ended up with $80. Find x.

    Answer: ____________________________________

  7. 7.

    A box has red and blue balls. 40% are red. After removing 10 blue balls, 50% are red. How many balls were there originally?

    Answer: ____________________________________

  8. 8.

    Two numbers have a sum of 84 and a difference of 20. Find both numbers.

    Answer: ____________________________________

  9. 9.

    A number has 3 added to it, then multiplied by 4, then 8 subtracted, giving 28. Find the number.

    Answer: ____________________________________

  10. 10.

    A factory produces 120 items per day. 5% are defective. How many non-defective items per week (5 days)?

    Answer: ____________________________________

Answer key โ€” P6 Math: Model Method & Working Backwards

For parents. Step-by-step explanations for every question are free on brightbit.net.

  1. 1.72
  2. 2.9
  3. 3.83 (approx 83โ…“)
  4. 4.40
  5. 5.8
  6. 6.80
  7. 7.50
  8. 8.52 and 32
  9. 9.6
  10. 10.570
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โ† Chapter 14: Number Patterns & SequencesChapter 16: Heuristics โ€” Guess-and-Check, Systematic Listing โ†’

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