Addition and subtraction · Ages 7–8

Subtracting twice worksheet

Part of: Three-digit addition and subtraction

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Addition and subtraction · Ages 7–8

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Write each answer in the space. For word problems, show your working and write a sentence answer.

1.91 − 19 − 3 =
Answer:
2.70 − 20 − 20 =
Answer:
3.90 − 20 − 30 =
Answer:
4.365 − 323 − 19 =
Answer:
5.Work out 325 − 122 − 148: first 325 − 122 = , then subtract 148 to get .
Fill in each blank
Answer:
6.902 − 126 − 53 =
Answer:
7.435 − 219 − 81 =
Answer:
8.864 − − 47 = 770
Answer:
9.325 − 255 − 45 =
Answer:
10.513 − − 194 = 153
Answer:

13.A bus has 87 passengers. 24 get off at the first stop and 20 at the second, and nobody gets on. How many passengers are left?
Working:
Answer:
14.Ming has $982. Ming spends $274 on books and $87 on pens. How much is left?
Working:
Answer:
15.A roll of ribbon is 549 cm long. 192 cm is cut off to wrap a present, then 129 cm for a bow. How much is left?
Working:
Answer:
16.Ka-yan has 379 cards, and Tsz-ching has 34 fewer than Ka-yan. Tsz-ching gives 92 to a friend. How many cards does Tsz-ching have left?
Working:
Answer:
17.A roll of ribbon is 531 cm long. 196 cm is cut off to wrap a present, then 173 cm for a bow. How much is left?
Working:
Answer:
18.A bus has 78 passengers. 16 get off at the first stop and 18 at the second, and nobody gets on. How many passengers are left?
Working:
Answer:

Show the answers and working

Subtracting twice worksheet: Answers and working

1. 69
Subtract from left to right. Start with 91 − 19.
Left to right: 91 − 19 = 72, 72 − 3 = 69.
2. 30
All three are whole tens: think of 7 tens minus 2 tens, then 2 tens more.
Whole tens, left to right: 70 − 20 = 50, 50 − 20 = 30, so the answer is 30.
3. 40
All three are whole tens: think of 9 tens minus 2 tens, then 3 tens more.
Whole tens, left to right: 90 − 20 = 70, 70 − 30 = 40, so the answer is 40.
4. 23
Subtract from left to right: 365 − 323 first, then subtract 19.
Left to right: 365 − 323 = 42, 42 − 19 = 23.
5. 203, 55
Do 325 − 122 first: hundreds, tens and ones, borrowing where a place is too small.
325 − 122 = 203; 203 − 148 = 55.
6. 723
Subtract from left to right: 902 − 126 first, then subtract 53.
Left to right: 902 − 126 = 776, 776 − 53 = 723.
7. 135
The ones of 219 and 81 make 10. Add those two first, then take the total away in one go.
219 and 81 make 300, so 435 − 300 = 135.
8. 47
864 minus □ and 47 leaves 770. Start by working out 864 minus 47.
864 minus □ and 47 leaves 770: 864 − 47 = 817, and 817 − 770 = 47.
9. 25
The ones of 255 and 45 make 10. Add those two first, then take the total away in one go.
255 and 45 make 300, so 325 − 300 = 25.
10. 166
513 minus □ and 194 leaves 153. Start by working out 513 minus 194.
513 minus □ and 194 leaves 153: 513 − 194 = 319, and 319 − 153 = 166.

11. True
Subtracting 85 and then 78: how much is taken altogether? Check whether 163 is that amount.
Subtracting 85 and then 78 is subtracting their sum, 85 + 78, at once.
12. False
Subtracting 159 and then 93: how much is taken altogether? Check whether 66 is that amount.
Subtracting 159 and then 93 is subtracting their sum, 159 + 93, at once.

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

13. 43 passengers
People get off at both stops, so subtract both. Start with 87 − 24.
87 − 24 − 20 = 43.
14. 621 dollars
Both lots of spending are subtracted. Go left to right, starting with 982 − 274.
982 − 274 − 87 = 621.
15. 228 cm
Both cuts are subtracted. Start with 549 − 192, or add the two cut lengths together first.
549 − 192 − 129 = 228.
16. 253 cards
First work out how many Tsz-ching had: 34 fewer than Ka-yan's 379.
Then subtract the 92 that Tsz-ching gives away.
Tsz-ching has 379 − 34 = 345; 345 − 92 = 253.
17. 162 cm
Both cuts are subtracted. Start with 531 − 196, or add the two cut lengths together first.
531 − 196 − 173 = 162.
18. 44 passengers
People get off at both stops, so subtract both. Start with 78 − 16.
78 − 16 − 18 = 44.

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