Let’s solve each problem one by one. Remember, we’re looking for the missing number that makes each multiplication equation true.
We can think of it like this:
If A × B = C, then A = C ÷ B (if A is missing) or B = C ÷ A (if B is missing).
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1a. ___ × 10 = 30000
→ Divide 30000 by 10 → 30000 ÷ 10 =
3000
1b. ___ × 100 = 40000
→ 40000 ÷ 100 =
400
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2a. ___ × 3000 = 24000000
→ 24000000 ÷ 3000 = ?
First, cancel zeros: 24000000 ÷ 3000 = 24000 ÷ 3 =
8000
Wait — let me check:
3000 × 8000 = 3 × 8 × 1000 × 1000 = 24 × 1,000,000 = 24,000,000
✔
2b. ___ × 600 = 12000
→ 12000 ÷ 600 = 120 ÷ 6 =
20
Check: 600 × 20 = 12,000
✔
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3a. ___ × 300 = 150000
→ 150000 ÷ 300 = 1500 ÷ 3 =
500
Check: 300 × 500 = 150,000
✔
3b. ___ × 90 = 9000
→ 9000 ÷ 90 = 900 ÷ 9 =
100
Check: 90 × 100 = 9,000
✔
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4a. 700 × ___ = 63000
→ 63000 ÷ 700 = 630 ÷ 7 =
90
Check: 700 × 90 = 63,000
✔
4b. 5000 × ___ = 150000
→ 150000 ÷ 5000 = 150 ÷ 5 =
30
Check: 5000 × 30 = 150,000
✔
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5a. 1000 × ___ = 4000000
→ 4000000 ÷ 1000 =
4000
Check: 1000 × 4000 = 4,000,000
✔
5b. 50 × ___ = 1000
→ 1000 ÷ 50 = 100 ÷ 5 =
20
Check: 50 × 20 = 1,000
✔
---
6a. 500 × ___ = 35000
→ 35000 ÷ 500 = 350 ÷ 5 =
70
Check: 500 × 70 = 35,000
✔
6b. 40 × ___ = 240000
→ 240000 ÷ 40 = 24000 ÷ 4 =
6000
Check: 40 × 6000 = 240,000
✔
---
7a. ___ × 70 = 560000
→ 560000 ÷ 70 = 56000 ÷ 7 =
8000
Check: 70 × 8000 = 560,000
✔
7b. 90 × ___ = 360000
→ 360000 ÷ 90 = 36000 ÷ 9 =
4000
Check: 90 × 4000 = 360,000
✔
---
8a. 1000 × ___ = 400000
→ 400000 ÷ 1000 =
400
Check: 1000 × 400 = 400,000
✔
8b. 60 × ___ = 120000
→ 120000 ÷ 60 = 12000 ÷ 6 =
2000
Check: 60 × 2000 = 120,000
✔
---
9a. 80 × ___ = 8000
→ 8000 ÷ 80 = 800 ÷ 8 =
100
Check: 80 × 100 = 8,000
✔
9b. ___ × 40 = 320000
→ 320000 ÷ 40 = 32000 ÷ 4 =
8000
Check: 40 × 8000 = 320,000
✔
---
10a. ___ × 100 = 500000
→ 500000 ÷ 100 =
5000
Check: 100 × 5000 = 500,000
✔
10b. ___ × 90 = 7200
→ 7200 ÷ 90 = 720 ÷ 9 =
80
Check: 90 × 80 = 7,200
✔
---
Final Answer:
1a. 3000
1b. 400
2a. 8000
2b. 20
3a. 500
3b. 100
4a. 90
4b. 30
5a. 4000
5b. 20
6a. 70
6b. 6000
7a. 8000
7b. 4000
8a. 400
8b. 2000
9a. 100
9b. 8000
10a. 5000
10b. 80
Parent Tip: Review the logic above to help your child master the concept of math worksheet grade 5.