3. Round 129 to the tens place
4. Round 4, 0978 to the hundreds place
5. Round 112, 126 to the thousands place
6. 3205 + 364
7. Four thousands seventy-three plus nin hundred sixteen
8. Subtract 42 from 57
9. 79-31
10. 128, 392-80,234
11. Eight thousands minus six hundred seventy-eight
12. 349 × 7
13. 1,126 × 3
14. Six thousands seventy-five times four
15. 54 × 716
16. Two hundred fifty-nine times two thousand, four hundred ninety-nine
17. 960 ÷ 6
18. One thousand, two hundred eighty-seven divided by nine
19. I am a prime number, when multiplied by three, I become 21. What number am I?
20. I am a two-digit prime number. My digits are the same. What number am I?
21. What is the LCM of the denominators of 5/30 and 8/10.?
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Answers & Comments
Answer:
3. 130
4. 41,000
5. 112,000
6. 3,569
7. 4073+916 = 4989
8. -15
9. 48
10. 48,158
11. 8000-678= 7322
12. 2,443
13. 3,378
14. 7075x4=28300
15.38,664
16. 259×2499=647,241
17. 160
18. 1287÷9=143
19. 7
20.11
21. LCM=120
Step-by-step explanation:
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