Let’s solve each problem step by step.
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Row 1: Addition
1.
363 + 125
3 + 5 = 8 (ones)
6 + 2 = 8 (tens)
3 + 1 = 4 (hundreds)
→
488
2.
273 + 351
3 + 1 = 4
7 + 5 = 12 → write 2, carry 1
2 + 3 + 1 = 6
→
624
3.
958 + 345
8 + 5 = 13 → write 3, carry 1
5 + 4 + 1 = 10 → write 0, carry 1
9 + 3 + 1 = 13
→
1303
4.
428 + 239
8 + 9 = 17 → write 7, carry 1
2 + 3 + 1 = 6
4 + 2 = 6
→
667
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Row 2: Subtraction
5.
562 - 280
2 - 0 = 2
6 - 8 → can’t do, borrow from hundreds → 16 - 8 = 8, hundreds becomes 4
4 - 2 = 2
→
282
6.
623 - 245
3 - 5 → borrow → 13 - 5 = 8, tens become 1
1 - 4 → borrow → 11 - 4 = 7, hundreds become 5
5 - 2 = 3
→
378
7.
125 - 109
5 - 9 → borrow → 15 - 9 = 6, tens become 1
1 - 0 = 1
1 - 1 = 0
→
16
8.
625 - 538
5 - 8 → borrow → 15 - 8 = 7, tens become 1
1 - 3 → borrow → 11 - 3 = 8, hundreds become 5
5 - 5 = 0
→
87
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Row 3: Multiplication
9.
523 × 45
Break it: 523 × 40 + 523 × 5
523 × 5 = 2615
523 × 40 = 20920
Add: 2615 + 20920 =
23535
10.
720 × 19
720 × 20 = 14400 → minus 720 = 14400 - 720 =
13680
11.
753 × 13
753 × 10 = 7530
753 × 3 = 2259
Add: 7530 + 2259 =
9789
12.
580 × 18
580 × 10 = 5800
580 × 8 = 4640
Add: 5800 + 4640 =
10440
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Row 4: Division
13.
183 ÷ 9
9 × 20 = 180 → remainder 3
→
20 R3 or
20.333... but since it's whole number division with remainder:
20 remainder 3
14.
960 ÷ 6
6 × 160 = 960 → exactly
→
160
15.
158 ÷ 10
10 × 15 = 150 → remainder 8
→
15 remainder 8
16.
165 ÷ 11
11 × 15 = 165 → exactly
→
15
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Final Answer:
488, 624, 1303, 667, 282, 378, 16, 87, 23535, 13680, 9789, 10440, 20 R3, 160, 15 R8, 15
Parent Tip: Review the logic above to help your child master the concept of simple math worksheet multiplication and division.
