To solve these multiplication problems, we’ll multiply each large number by the smaller number below it. Since all the multipliers end in zero (like 30, 50, 80, etc.), here’s a simple trick:
✔ Step 1: Ignore the zero at the end of the multiplier.
✔ Step 2: Multiply the big number by the digit before the zero.
✔ Step 3: Add one zero to the end of your answer.
Let’s go problem by problem and calculate carefully.
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Problem 1: 45,503 × 30
→ 45,503 × 3 = 136,509 → add zero →
1,365,090
Problem 2: 82,978 × 30
→ 82,978 × 3 = 248,934 → add zero →
2,489,340
Problem 3: 64,538 × 80
→ 64,538 × 8 = 516,304 → add zero →
5,163,040
Problem 4: 47,791 × 50
→ 47,791 × 5 = 238,955 → add zero →
2,389,550
Problem 5: 17,498 × 80
→ 17,498 × 8 = 139,984 → add zero →
1,399,840
Problem 6: 7,024 × 50
→ 7,024 × 5 = 35,120 → add zero →
351,200
Problem 7: 16,345 × 30
→ 16,345 × 3 = 49,035 → add zero →
490,350
Problem 8: 60,729 × 60
→ 60,729 × 6 = 364,374 → add zero →
3,643,740
Problem 9: 75,334 × 10
→ Just add one zero →
753,340
Problem 10: 19,035 × 10
→ Add one zero →
190,350
Problem 11: 64,762 × 10
→ Add one zero →
647,620
Problem 12: 30,145 × 80
→ 30,145 × 8 = 241,160 → add zero →
2,411,600
Problem 13: 50,720 × 60
→ 50,720 × 6 = 304,320 → add zero →
3,043,200
Problem 14: 92,727 × 70
→ 92,727 × 7 = 649,089 → add zero →
6,490,890
Problem 15: 71,215 × 50
→ 71,215 × 5 = 356,075 → add zero →
3,560,750
Problem 16: 4,441 × 50
→ 4,441 × 5 = 22,205 → add zero →
222,050
Problem 17: 67,667 × 30
→ 67,667 × 3 = 203,001 → add zero →
2,030,010
Problem 18: 3,911 × 10
→ Add one zero →
39,110
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Final Answer:
1. 1,365,090
2. 2,489,340
3. 5,163,040
4. 2,389,550
5. 1,399,840
6. 351,200
7. 490,350
8. 3,643,740
9. 753,340
10. 190,350
11. 647,620
12. 2,411,600
13. 3,043,200
14. 6,490,890
15. 3,560,750
16. 222,050
17. 2,030,010
18. 39,110
Parent Tip: Review the logic above to help your child master the concept of printable multiplication for 5th grade.