Let’s solve each multiplication problem one by one. We’ll go row by row, and for each, we’ll multiply the top number by the bottom number.
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First Row:
1.
629 × 2
→ 600×2 = 1200
→ 20×2 = 40
→ 9×2 = 18
→ Add them: 1200 + 40 + 18 =
1258
2.
345 × 9
→ 300×9 = 2700
→ 40×9 = 360
→ 5×9 = 45
→ Add: 2700 + 360 = 3060; 3060 + 45 =
3105
3.
238 × 5
→ 200×5 = 1000
→ 30×5 = 150
→ 8×5 = 40
→ Add: 1000 + 150 = 1150; 1150 + 40 =
1190
4.
126 × 3
→ 100×3 = 300
→ 20×3 = 60
→ 6×3 = 18
→ Add: 300 + 60 = 360; 360 + 18 =
378
5.
452 × 7
→ 400×7 = 2800
→ 50×7 = 350
→ 2×7 = 14
→ Add: 2800 + 350 = 3150; 3150 + 14 =
3164
6.
766 × 5
→ 700×5 = 3500
→ 60×5 = 300
→ 6×5 = 30
→ Add: 3500 + 300 = 3800; 3800 + 30 =
3830
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Second Row:
7.
117 × 7
→ 100×7 = 700
→ 10×7 = 70
→ 7×7 = 49
→ Add: 700 + 70 = 770; 770 + 49 =
819
8.
381 × 2
→ 300×2 = 600
→ 80×2 = 160
→ 1×2 = 2
→ Add: 600 + 160 = 760; 760 + 2 =
762
9.
988 × 4
→ 900×4 = 3600
→ 80×4 = 320
→ 8×4 = 32
→ Add: 3600 + 320 = 3920; 3920 + 32 =
3952
10.
872 × 3
→ 800×3 = 2400
→ 70×3 = 210
→ 2×3 = 6
→ Add: 2400 + 210 = 2610; 2610 + 6 =
2616
11.
493 × 6
→ 400×6 = 2400
→ 90×6 = 540
→ 3×6 = 18
→ Add: 2400 + 540 = 2940; 2940 + 18 =
2958
12.
313 × 8
→ 300×8 = 2400
→ 10×8 = 80
→ 3×8 = 24
→ Add: 2400 + 80 = 2480; 2480 + 24 =
2504
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Third Row:
13.
647 × 9
→ 600×9 = 5400
→ 40×9 = 360
→ 7×9 = 63
→ Add: 5400 + 360 = 5760; 5760 + 63 =
5823
14.
810 × 6
→ 800×6 = 4800
→ 10×6 = 60
→ 0×6 = 0
→ Add: 4800 + 60 =
4860
15.
929 × 9
→ 900×9 = 8100
→ 20×9 = 180
→ 9×9 = 81
→ Add: 8100 + 180 = 8280; 8280 + 81 =
8361
16.
522 × 6
→ 500×6 = 3000
→ 20×6 = 120
→ 2×6 = 12
→ Add: 3000 + 120 = 3120; 3120 + 12 =
3132
17.
585 × 7
→ 500×7 = 3500
→ 80×7 = 560
→ 5×7 = 35
→ Add: 3500 + 560 = 4060; 4060 + 35 =
4095
18.
409 × 5
→ 400×5 = 2000
→ 0×5 = 0
→ 9×5 = 45
→ Add: 2000 + 0 + 45 =
2045
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Final Answer:
1258, 3105, 1190, 378, 3164, 3830,
819, 762, 3952, 2616, 2958, 2504,
5823, 4860, 8361, 3132, 4095, 2045
Parent Tip: Review the logic above to help your child master the concept of 7th grade math worksheet multiplication.
