Let’s solve each problem step by step.
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Multiply Problems:
① 827 × 3
Break it down:
800 × 3 = 2400
20 × 3 = 60
7 × 3 = 21
Add them: 2400 + 60 = 2460; 2460 + 21 =
2481
② 489 × 6
400 × 6 = 2400
80 × 6 = 480
9 × 6 = 54
Add: 2400 + 480 = 2880; 2880 + 54 =
2934
③ 748 × 9
700 × 9 = 6300
40 × 9 = 360
8 × 9 = 72
Add: 6300 + 360 = 6660; 6660 + 72 =
6732
④ 675 × 4
600 × 4 = 2400
70 × 4 = 280
5 × 4 = 20
Add: 2400 + 280 = 2680; 2680 + 20 =
2700
⑤ 383 × 4
300 × 4 = 1200
80 × 4 = 320
3 × 4 = 12
Add: 1200 + 320 = 1520; 1520 + 12 =
1532
⑥ 465 × 7
400 × 7 = 2800
60 × 7 = 420
5 × 7 = 35
Add: 2800 + 420 = 3220; 3220 + 35 =
3255
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Divide Problems:
① 596 ÷ 4
How many times does 4 go into 5? → 1 time (remainder 1)
Bring down 9 → 19
4 goes into 19 → 4 times (16), remainder 3
Bring down 6 → 36
4 goes into 36 → 9 times exactly
Answer:
149
Check: 149 × 4 = 596 ✔️
② 615 ÷ 5
5 into 6 → 1, remainder 1
Bring down 1 → 11
5 into 11 → 2, remainder 1
Bring down 5 → 15
5 into 15 → 3
Answer:
123
Check: 123 × 5 = 615 ✔️
③ 860 ÷ 4
4 into 8 → 2
4 into 6 → 1, remainder 2
Bring down 0 → 20
4 into 20 → 5
Answer:
215
Check: 215 × 4 = 860 ✔️
④ 654 ÷ 3
3 into 6 → 2
3 into 5 → 1, remainder 2
Bring down 4 → 24
3 into 24 → 8
Answer:
218
Check: 218 × 3 = 654 ✔️
⑤ 456 ÷ 4
4 into 4 → 1
4 into 5 → 1, remainder 1
Bring down 6 → 16
4 into 16 → 4
Answer:
114
Check: 114 × 4 = 456 ✔️
⑥ 632 ÷ 4
4 into 6 → 1, remainder 2
Bring down 3 → 23
4 into 23 → 5, remainder 3
Bring down 2 → 32
4 into 32 → 8
Answer:
158
Check: 158 × 4 = 632 ✔️
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Final Answer:
Multiply:
① 2481
② 2934
③ 6732
④ 2700
⑤ 1532
⑥ 3255
Divide:
① 149
② 123
③ 215
④ 218
⑤ 114
⑥ 158
Parent Tip: Review the logic above to help your child master the concept of division problems for 4th graders.
