More addition & subtraction

Subtraction with regrouping

Name: ______________________________Date: ______________Score: ______ / 20

1.
In which subtraction do you not have enough tens, so you regroup a hundred as 10 tens?
1. A246 − 84
2. B246 − 24
3. C268 − 45
2.
Work out 246 − 84.
3.
Work out 148 − 60.
4.
Work out 245 − 82.
5.
Work out 326 − 71.
6.
Work out 534 − 93.
7.
Work out 339 − 163.
8.
Work out 355 − 172.
9.
Work out 647 − 386.
10.
Work out 518 − 248.
11.
A factory makes 375 T-shirts. A van collects 168 of them. How many T-shirts are left?
T-shirts
12.
Regroup 235 by exchanging 1 hundred for 10 tens. Which is correct?
1. A200 + 30 + 5
2. B100 + 130 + 5
3. C100 + 30 + 5
13.
Regroup 452 by exchanging 1 hundred for 10 tens. Which is correct?
1. A300 + 150 + 2
2. B400 + 50 + 2
3. C300 + 15 + 2
14.
763 = 600 + ? + 3 when you exchange 1 hundred for 10 tens. What is the missing number?
15.
Estimate 246 − 84 by rounding each number to the nearest 10.
16.
Estimate 534 − 93 by rounding each number to the nearest 10.
17.
A museum has 147 adults and children. If 63 are adults, how many are children?
1. A74
2. B84
3. C210
18.
Find the unknown: 147 − ? = 63.
19.
A park has 243 adults and children. If 151 are children, how many are adults?
20.
Sofia and Zara have 34 marbles all together. They have the same number each. How many marbles each?
marbles

Answer key

More addition & subtraction — Subtraction with regrouping