Let’s solve each multiplication problem step by step. We’ll multiply a 3-digit number by a 2-digit number using the standard method: first multiply by the ones digit, then by the tens digit (remembering to add a zero at the end), and finally add the two results together.
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1) 584 × 46
First, multiply 584 × 6 =
584 × 6 = 3504
Then, multiply 584 × 40 =
584 × 4 = 2336 → add a zero → 23360
Now add:
3504 + 23360 =
26864
✔ Check: 584 × 46 = 26864
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2) 671 × 38
671 × 8 = 5368
671 × 30 = 671 × 3 = 2013 → add zero → 20130
Add: 5368 + 20130 =
25498
✔ Check: 671 × 38 = 25498
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3) 807 × 54
807 × 4 = 3228
807 × 50 = 807 × 5 = 4035 → add zero → 40350
Add: 3228 + 40350 =
43578
✔ Check: 807 × 54 = 43578
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4) 943 × 27
943 × 7 = 6601
943 × 20 = 943 × 2 = 1886 → add zero → 18860
Add: 6601 + 18860 =
25461
✔ Check: 943 × 27 = 25461
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5) 648 × 19
648 × 9 = 5832
648 × 10 = 6480
Add: 5832 + 6480 =
12312
✔ Check: 648 × 19 = 12312
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6) 428 × 49
428 × 9 = 3852
428 × 40 = 428 × 4 = 1712 → add zero → 17120
Add: 3852 + 17120 =
20972
✔ Check: 428 × 49 = 20972
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7) 687 × 64
687 × 4 = 2748
687 × 60 = 687 × 6 = 4122 → add zero → 41220
Add: 2748 + 41220 =
43968
✔ Check: 687 × 64 = 43968
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8) 489 × 56
489 × 6 = 2934
489 × 50 = 489 × 5 = 2445 → add zero → 24450
Add: 2934 + 24450 =
27384
✔ Check: 489 × 56 = 27384
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9) 715 × 83
715 × 3 = 2145
715 × 80 = 715 × 8 = 5720 → add zero → 57200
Add: 2145 + 57200 =
59345
✔ Check: 715 × 83 = 59345
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10) 973 × 66
973 × 6 = 5838
973 × 60 = 973 × 6 = 5838 → add zero → 58380
Add: 5838 + 58380 =
64218
✔ Check: 973 × 66 = 64218
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11) 389 × 85
389 × 5 = 1945
389 × 80 = 389 × 8 = 3112 → add zero → 31120
Add: 1945 + 31120 =
33065
✔ Check: 389 × 85 = 33065
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12) 583 × 97
583 × 7 = 4081
583 × 90 = 583 × 9 = 5247 → add zero → 52470
Add: 4081 + 52470 =
56551
✔ Check: 583 × 97 = 56551
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Final Answer:
1) 26864
2) 25498
3) 43578
4) 25461
5) 12312
6) 20972
7) 43968
8) 27384
9) 59345
10) 64218
11) 33065
12) 56551
Parent Tip: Review the logic above to help your child master the concept of multiplying worksheet 4th grade.
