Let’s solve each subtraction problem one by one. We’ll line up the numbers and subtract carefully, especially when we need to “borrow” across zeros.
---
Row 1:
1.
509 - 32
Start from right: 9 - 2 = 7
Middle: 0 - 3 → can’t do, borrow from 5 → becomes 4, middle becomes 10 → 10 - 3 = 7
Left: 4 - 0 = 4
→
477
2.
300 - 5
Right: 0 - 5 → can’t do, borrow from middle 0 → must go to hundreds
Hundreds: 3 becomes 2, middle 0 becomes 10, then borrow 1 for units → middle becomes 9, units becomes 10
Now: 10 - 5 = 5, middle 9 - 0 = 9, hundreds 2 - 0 = 2
→
295
3.
608 - 43
Units: 8 - 3 = 5
Tens: 0 - 4 → borrow from 6 → 5, tens become 10 → 10 - 4 = 6
Hundreds: 5 - 0 = 5
→
565
4.
900 - 32
Units: 0 - 2 → borrow from hundreds (via tens)
Hundreds: 9 → 8, tens: 0 → 10 → borrow 1 → tens become 9, units become 10
10 - 2 = 8, tens 9 - 3 = 6, hundreds 8 - 0 = 8
→
868
---
Row 2:
5.
650 - 21
Units: 0 - 1 → borrow from 5 → 4, units become 10 → 10 - 1 = 9
Tens: 4 - 2 = 2
Hundreds: 6 - 0 = 6
→
629
6.
100 - 6
Units: 0 - 6 → borrow from hundreds via tens
Hundreds: 1 → 0, tens: 0 → 10 → borrow 1 → tens become 9, units become 10
10 - 6 = 4, tens 9 - 0 = 9, hundreds 0 - 0 = 0 (skip leading zero)
→
94
7.
450 - 134
Units: 0 - 4 → borrow from 5 → 4, units become 10 → 10 - 4 = 6
Tens: 4 - 3 = 1
Hundreds: 4 - 1 = 3
→
316
8.
708 - 372
Units: 8 - 2 = 6
Tens: 0 - 7 → borrow from 7 → 6, tens become 10 → 10 - 7 = 3
Hundreds: 6 - 3 = 3
→
336
---
Row 3:
9.
500 - 3
Units: 0 - 3 → borrow from hundreds via tens
Hundreds: 5 → 4, tens: 0 → 10 → borrow 1 → tens become 9, units become 10
10 - 3 = 7, tens 9 - 0 = 9, hundreds 4 - 0 = 4
→
497
10.
900 - 27
Units: 0 - 7 → borrow from hundreds via tens
Hundreds: 9 → 8, tens: 0 → 10 → borrow 1 → tens become 9, units become 10
10 - 7 = 3, tens 9 - 2 = 7, hundreds 8 - 0 = 8
→
873
11.
600 - 32
Units: 0 - 2 → borrow from hundreds via tens
Hundreds: 6 → 5, tens: 0 → 10 → borrow 1 → tens become 9, units become 10
10 - 2 = 8, tens 9 - 3 = 6, hundreds 5 - 0 = 5
→
568
12.
400 - 91
Units: 0 - 1 → borrow from hundreds via tens
Hundreds: 4 → 3, tens: 0 → 10 → borrow 1 → tens become 9, units become 10
10 - 1 = 9, tens 9 - 9 = 0, hundreds 3 - 0 = 3
→
309
---
Row 4:
13.
402 - 32
Units: 2 - 2 = 0
Tens: 0 - 3 → borrow from 4 → 3, tens become 10 → 10 - 3 = 7
Hundreds: 3 - 0 = 3
→
370
14.
580 - 123
Units: 0 - 3 → borrow from 8 → 7, units become 10 → 10 - 3 = 7
Tens: 7 - 2 = 5
Hundreds: 5 - 1 = 4
→
457
15.
990 - 25
Units: 0 - 5 → borrow from 9 → 8, units become 10 → 10 - 5 = 5
Tens: 8 - 2 = 6
Hundreds: 9 - 0 = 9
→
965
16.
250 - 45
Units: 0 - 5 → borrow from 5 → 4, units become 10 → 10 - 5 = 5
Tens: 4 - 4 = 0
Hundreds: 2 - 0 = 2
→
205
---
Final Answer:
477, 295, 565, 868, 629, 94, 316, 336, 497, 873, 568, 309, 370, 457, 965, 205
Parent Tip: Review the logic above to help your child master the concept of subtraction with regrouping over zeros worksheet.