Let’s solve each multiplication problem step by step. We’ll do them one at a time, carefully.
---
1. 37 × 18
Break it down:
37 × 10 = 370
37 × 8 = 296
Add them: 370 + 296 =
666
✔ Check: 37 × 18 = (40 - 3) × 18 = 720 - 54 = 666 → Correct.
---
2. 41 × 47
Use standard multiplication:
41
× 47
------
287 ← 41 × 7
+1640 ← 41 × 40 (shifted left)
------
1927
✔ Check: 40×47 = 1880, plus 1×47 = 47 → 1880 + 47 = 1927 → Correct.
---
3. 73 × 48
73 × 40 = 2920
73 × 8 = 584
Add: 2920 + 584 =
3504
✔ Check: 70×48 = 3360, 3×48=144 → 3360+144=3504 → Correct.
---
4. 10 × 29
Easy! Just add a zero to 29 →
290
✔ Check: 10 × anything is that number with a zero → Correct.
---
5. 15 × 35
15 × 30 = 450
15 × 5 = 75
Add: 450 + 75 =
525
✔ Check: 10×35=350, 5×35=175 → 350+175=525 → Correct.
---
6. 63 × 53
63 × 50 = 3150
63 × 3 = 189
Add: 3150 + 189 =
3339
✔ Check: 60×53=3180, 3×53=159 → 3180+159=3339 → Correct.
---
7. 32 × 67
32 × 60 = 1920
32 × 7 = 224
Add: 1920 + 224 =
2144
✔ Check: 30×67=2010, 2×67=134 → 2010+134=2144 → Correct.
---
8. 45 × 30
45 × 3 = 135, then add a zero →
1350
✔ Check: 45 × 30 = 45 × 3 × 10 = 135 × 10 = 1350 → Correct.
---
9. 39 × 33
39 × 30 = 1170
39 × 3 = 117
Add: 1170 + 117 =
1287
✔ Check: 40×33=1320, minus 1×33=33 → 1320-33=1287 → Correct.
---
10. 11 × 33
11 × 33 = 33 × 10 + 33 × 1 = 330 + 33 =
363
✔ Check: 11×33 is easy — just repeat digits? No, but 33×11=363 → Correct.
---
11. 28 × 66
28 × 60 = 1680
28 × 6 = 168
Add: 1680 + 168 =
1848
✔ Check: 30×66=1980, minus 2×66=132 → 1980-132=1848 → Correct.
---
12. 82 × 28
82 × 20 = 1640
82 × 8 = 656
Add: 1640 + 656 =
2296
✔ Check: 80×28=2240, 2×28=56 → 2240+56=2296 → Correct.
---
13. 16 × 73
16 × 70 = 1120
16 × 3 = 48
Add: 1120 + 48 =
1168
✔ Check: 10×73=730, 6×73=438 → 730+438=1168 → Correct.
---
14. 93 × 22
93 × 20 = 1860
93 × 2 = 186
Add: 1860 + 186 =
2046
✔ Check: 90×22=1980, 3×22=66 → 1980+66=2046 → Correct.
---
15. 36 × 21
36 × 20 = 720
36 × 1 = 36
Add: 720 + 36 =
756
✔ Check: 36×21 = 36×(20+1) = 720+36=756 → Correct.
---
16. 62 × 17
62 × 10 = 620
62 × 7 = 434
Add: 620 + 434 =
1054
✔ Check: 60×17=1020, 2×17=34 → 1020+34=1054 → Correct.
---
17. 83 × 27
83 × 20 = 1660
83 × 7 = 581
Add: 1660 + 581 =
2241
✔ Check: 80×27=2160, 3×27=81 → 2160+81=2241 → Correct.
---
18. 44 × 66
44 × 60 = 2640
44 × 6 = 264
Add: 2640 + 264 =
2904
✔ Check: 40×66=2640, 4×66=264 → 2640+264=2904 → Correct.
---
19. 70 × 28
70 × 28 = 7 × 28 × 10 = 196 × 10 =
1960
✔ Check: 70×28 → 7×28=196, add zero → 1960 → Correct.
---
20. 81 × 38
81 × 30 = 2430
81 × 8 = 648
Add: 2430 + 648 =
3078
✔ Check: 80×38=3040, 1×38=38 → 3040+38=3078 → Correct.
---
Final Answer:
Here are all the answers in order as they appear on the worksheet:
Row 1: 666, 1927, 3504, 290
Row 2: 525, 3339, 2144, 1350
Row 3: 1287, 363, 1848, 2296
Row 4: 1168, 2046, 756, 1054
Row 5: 2241, 2904, 1960, 3078
Parent Tip: Review the logic above to help your child master the concept of multi digit multiplication worksheet grade 5.
