Giving change worksheet

Part A: Working out and filling in

1. 1. Ball $14, pay $100, change $86

   $14, paying $100: count up from the price, $14 → $20 is $6, $20 → $100 is $80, 6 + 80 = 86, so $86 change

2. 2. Cake $29, pay $50, change $21

   $29, paying $50: count up from the price, $29 → $30 is $1, $30 → $50 is $20, 1 + 20 = 21, so $21 change

3. 3. Ball $22, pay $50, change $28

   $22, paying $50: count up from the price, $22 → $30 is $8, $30 → $50 is $20, 8 + 20 = 28, so $28 change

4. 4. Kite $51, pay $100, change $49

   $51, paying $100: count up from the price, $51 → $60 is $9, $60 → $100 is $40, 9 + 40 = 49, so $49 change

5. 5. Book $85, pay $100, change $15

   $85, paying $100: count up from the price, $85 → $90 is $5, $90 → $100 is $10, 5 + 10 = 15, so $15 change

6. 6. Cake $45, pay $50, change $5

   $45, paying $50: count up from the price, $45 → $50 is $5, 45 + 5 = 50, so $5 change

7. 7. Cap $58, pay $100, change $42

   $58, paying $100: count up from the price, $58 → $60 is $2, $60 → $100 is $40, 2 + 40 = 42, so $42 change

8. 8. Ball $19, pay $50, change $31

   $19, paying $50: count up from the price, $19 → $20 is $1, $20 → $50 is $30, 1 + 30 = 31, so $31 change

9. 9. Book $47, pay $50, change $3

   $47, paying $50: count up from the price, $47 → $50 is $3, 47 + 3 = 50, so $3 change

10. 10. Book $79, pay $100, change $21

    $79, paying $100: count up from the price, $79 → $80 is $1, $80 → $100 is $20, 1 + 20 = 21, so $21 change

11. 11. Ball $62, pay $100, change $38

    $62, paying $100: count up from the price, $62 → $70 is $8, $70 → $100 is $30, 8 + 30 = 38, so $38 change

12. 12. Ball $53, pay $100, change $47

    $53, paying $100: count up from the price, $53 → $60 is $7, $60 → $100 is $40, 7 + 40 = 47, so $47 change

Part B: Word problems

Marking: 2 for the working, 1 for the answer, 1 for the sentence.

1. 13. Tsz-ching buys one storybook and pays with a $50 note. She gets $22 change. How many dollars does the storybook cost? (Answer: 28 dollars)

   50 − 22 = 28

2. 14. Ming buys a pen for $7 and a storybook for $31, and pays with a $100 note. How much change should he get, in dollars? (Answer: 62 dollars)

   100 − (7 + 31) = 62

3. 15. Tsz-ching buys a notebook for $29 and pays with a $50 note. How much change should she get, in dollars? (Answer: 21 dollars)

   50 − 29 = 21

4. 16. May buys one kite and pays with a $50 note. She gets $26 change. How many dollars does the kite cost? (Answer: 24 dollars)

   50 − 26 = 24

5. 17. Ka-yee buys a notebook for $40 and pays with a $50 note. How much change should she get, in dollars? (Answer: 10 dollars)

   50 − 40 = 10

6. 18. Ka-yee buys a pen for $15 and a storybook for $25, and pays with a $100 note. How much change should she get, in dollars? (Answer: 60 dollars)

   100 − (15 + 25) = 60