Let’s solve each multiplication problem step by step. We’ll go row by row, left to right.
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Row 1:
1. 23 × 60
→ 23 × 6 = 138 → add a zero →
1380
2. 53 × 64
→ Break it down:
53 × 60 = 3180
53 × 4 = 212
Add: 3180 + 212 =
3392
3. 75 × 33
→ 75 × 30 = 2250
75 × 3 = 225
Add: 2250 + 225 =
2475
4. 24 × 84
→ 24 × 80 = 1920
24 × 4 = 96
Add: 1920 + 96 =
2016
5. 23 × 85
→ 23 × 80 = 1840
23 × 5 = 115
Add: 1840 + 115 =
1955
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Row 2:
6. 87 × 14
→ 87 × 10 = 870
87 × 4 = 348
Add: 870 + 348 =
1218
7. 38 × 25
→ 38 × 20 = 760
38 × 5 = 190
Add: 760 + 190 =
950
8. 27 × 45
→ 27 × 40 = 1080
27 × 5 = 135
Add: 1080 + 135 =
1215
9. 28 × 61
→ 28 × 60 = 1680
28 × 1 = 28
Add: 1680 + 28 =
1708
10. 16 × 23
→ 16 × 20 = 320
16 × 3 = 48
Add: 320 + 48 =
368
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Row 3:
11. 32 × 17
→ 32 × 10 = 320
32 × 7 = 224
Add: 320 + 224 =
544
12. 87 × 16
→ 87 × 10 = 870
87 × 6 = 522
Add: 870 + 522 =
1392
13. 20 × 17
→ 20 × 17 =
340 (easy — just 2×17=34, then add zero)
14. 36 × 55
→ 36 × 50 = 1800
36 × 5 = 180
Add: 1800 + 180 =
1980
15. 84 × 27
→ 84 × 20 = 1680
84 × 7 = 588
Add: 1680 + 588 =
2268
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Row 4:
16. 95 × 14
→ 95 × 10 = 950
95 × 4 = 380
Add: 950 + 380 =
1330
17. 50 × 18
→ 50 × 18 =
900 (5×18=90, add zero)
18. 30 × 24
→ 30 × 24 =
720 (3×24=72, add zero)
19. 69 × 17
→ 69 × 10 = 690
69 × 7 = 483
Add: 690 + 483 =
1173
20. 68 × 41
→ 68 × 40 = 2720
68 × 1 = 68
Add: 2720 + 68 =
2788
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Row 5:
21. 11 × 35
→ 11 × 35 =
385 (trick: 35 × 10 = 350, plus 35 = 385)
22. 74 × 12
→ 74 × 10 = 740
74 × 2 = 148
Add: 740 + 148 =
888
23. 52 × 18
→ 52 × 10 = 520
52 × 8 = 416
Add: 520 + 416 =
936
24. 61 × 24
→ 61 × 20 = 1220
61 × 4 = 244
Add: 1220 + 244 =
1464
25. 87 × 25
→ 87 × 20 = 1740
87 × 5 = 435
Add: 1740 + 435 =
2175
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Final Answer:
Row 1: 1380, 3392, 2475, 2016, 1955
Row 2: 1218, 950, 1215, 1708, 368
Row 3: 544, 1392, 340, 1980, 2268
Row 4: 1330, 900, 720, 1173, 2788
Row 5: 385, 888, 936, 1464, 2175
Parent Tip: Review the logic above to help your child master the concept of fifth grade math tests.