Here are the solutions to the multiplication problems. I have calculated each one step-by-step to ensure accuracy.
1)
164 × 39
- $164 \times 9 = 1,476$
- $164 \times 30 = 4,920$
- $1,476 + 4,920 = 6,396$
2)
459 × 15
- $459 \times 5 = 2,295$
- $459 \times 10 = 4,590$
- $2,295 + 4,590 = 6,885$
3)
224 × 92
- $224 \times 2 = 448$
- $224 \times 90 = 20,160$
- $448 + 20,160 = 20,608$
4)
862 × 79
- $862 \times 9 = 7,758$
- $862 \times 70 = 60,340$
- $7,758 + 60,340 = 68,098$
5)
261 × 76
- $261 \times 6 = 1,566$
- $261 \times 70 = 18,270$
- $1,566 + 18,270 = 19,836$
6)
667 × 89
- $667 \times 9 = 6,003$
- $667 \times 80 = 53,360$
- $6,003 + 53,360 = 59,363$
7)
360 × 11
- $360 \times 1 = 360$
- $360 \times 10 = 3,600$
- $360 + 3,600 = 3,960$
8)
631 × 43
- $631 \times 3 = 1,893$
- $631 \times 40 = 25,240$
- $1,893 + 25,240 = 27,133$
9)
155 × 51
- $155 \times 1 = 155$
- $155 \times 50 = 7,750$
- $155 + 7,750 = 7,905$
10)
165 × 73
- $165 \times 3 = 495$
- $165 \times 70 = 11,550$
- $495 + 11,550 = 12,045$
11)
630 × 35
- $630 \times 5 = 3,150$
- $630 \times 30 = 18,900$
- $3,150 + 18,900 = 22,050$
12)
927 × 86
- $927 \times 6 = 5,562$
- $927 \times 80 = 74,160$
- $5,562 + 74,160 = 79,722$
13)
519 × 30
- $519 \times 3 = 1,557$
- Add a zero at the end: $15,570$
14)
527 × 33
- $527 \times 3 = 1,581$
- $527 \times 30 = 15,810$
- $1,581 + 15,810 = 17,391$
15)
808 × 54
- $808 \times 4 = 3,232$
- $808 \times 50 = 40,400$
- $3,232 + 40,400 = 43,632$
16)
625 × 93
- $625 \times 3 = 1,875$
- $625 \times 90 = 56,250$
- $1,875 + 56,250 = 58,125$
17)
230 × 82
- $230 \times 2 = 460$
- $230 \times 80 = 18,400$
- $460 + 18,400 = 18,860$
18)
630 × 38
- $630 \times 8 = 5,040$
- $630 \times 30 = 18,900$
- $5,040 + 18,900 = 23,940$
19)
670 × 44
- $670 \times 4 = 2,680$
- $670 \times 40 = 26,800$
- $2,680 + 26,800 = 29,480$
20)
401 × 44
- $401 \times 4 = 1,604$
- $401 \times 40 = 16,040$
- $1,604 + 16,040 = 17,644$
Final Answer:
1. 6,396
2. 6,885
3. 20,608
4. 68,098
5. 19,836
6. 59,363
7. 3,960
8. 27,133
9. 7,905
10. 12,045
11. 22,050
12. 79,722
13. 15,570
14. 17,391
15. 43,632
16. 58,125
17. 18,860
18. 23,940
19. 29,480
20. 17,644
Parent Tip: Review the logic above to help your child master the concept of 5 nbt 5 worksheet.
