Feeding Yourself on a Budget · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.

Feed yourself on a fixed sum

Design & Technology · Food & Cooking · ages 14-16
Name ______________________   Date ____________

  1. Rice costs 1.40 per pound. You buy 5 pounds for the week. What is the total cost?

    Answer: ______________

  2. Why is thrown-away food the most expensive food?

    • Bins charge rent
    • Shops fine you
    • You paid for bites nobody eats

  3. How do you fairly compare a 500 g bag with a 1 kg bag?

    • Pick the taller bag
    • Compare price per unit
    • Pick the brighter label

  4. Rice costs $1.40 per pound. You want 5 pounds for a week of dinners. How much will the rice cost?

    Answer: ______________

  5. A small bag of oats is 500 g for $2.00. A big bag is 1 kg for $3.60. What does the big bag cost per 500 g?

    • $1.80
    • $2.00
    • $3.60
    • $0.90

  6. Which pair stretches a tight week with protein and bulk?

    • Sweets and soda
    • Tinned beans and oats
    • Ice and herbs

  7. You split your weekly food money between fresh ingredients and store-cupboard staples in the ratio 5:3. This week you spend $20 on fresh ingredients. How much should you spend on staples to keep the ratio?

    Answer: ______________

  8. Dried pasta costs $1.25 per pound. You have $5.00 set aside for pasta. How many pounds can you buy?

    Answer: ______________

  9. A tin of beans at 40 percent off now costs 0.90. A friend says the original price was 1.50. Are they right?

    • Yes, 60 percent of 1.50 is 0.90
    • No, discounts never work that way
    • No, the original was 1.30

  10. A tin of beans is on sale at 40% off and now costs $0.90. True or false: the original price was $1.50.

    Circle one:   True   False

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Answer key

For grown-ups. Fold this page away before handing over the rest.

Feed yourself on a fixed sum W1-mt_C1XoXVJlgA-s1

  1. 7 · Total cost is unit price times pounds: 1.40 times 5 is 7.
  2. You paid for bites nobody eats · Wasted parts still cost money, so they cost the most per bite eaten.
  3. Compare price per unit · Unit prices put different sizes on equal footing.
  4. 7 · Total cost is the unit price multiplied by how many pounds you buy, so $1.40 times 5 is $7.00.
  5. $1.80 · The big bag holds twice as much as the small bag, so its price per 500 g is half of $3.60, which is $1.80. That is cheaper than the small bag's $2.00 per 500 g.
  6. Tinned beans and oats · Beans bring protein to stews while oats bulk out meals cheaply.
  7. 12 · The ratio 5:3 means every $5 of fresh food matches $3 of staples. Since $20 is 4 groups of $5, staples get 4 groups of $3, which is $12.
  8. 4 · Divide the money you have by the price per pound: 5.00 divided by 1.25 is 4 pounds.
  9. Yes, 60 percent of 1.50 is 0.90 · 40 percent off leaves 60 percent, and 60 percent of 1.50 is 0.90.
  10. True · After 40% off you pay 60% of the original. If 0.6 times the original is $0.90, the original is 0.90 / 0.6 = $1.50, so the statement is true.
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