Use Compatible Numbers.
5,172/74=
1,891/32=
6,301/81=
5,232/5=
366/6=
19,008/64=
2,622/67=
461/91=
7,952/42=
2,759/30=
5,172/74= 5,000 / 75
This site will help you understand compatible numbers.
http://www.basic-mathematics.com/what-are-compatible-numbers.html
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To use compatible numbers in division, you need to find numbers that are close to the original numbers and are easier to work with. Here's how you can use compatible numbers to solve each division problem:
1. 5,172/74: Let's round 5,172 to the nearest hundred, which is 5,200. Then, round 74 to the nearest ten, which is 70. Now divide 5,200 by 70. The answer is 74.
2. 1,891/32: Let's round 1,891 to the nearest hundred, which is 1,900. Then, round 32 to the nearest ten, which is 30. Now divide 1,900 by 30. The answer is 63.
3. 6,301/81: Let's round 6,301 to the nearest thousand, which is 6,000. Then, round 81 to the nearest ten, which is 80. Now divide 6,000 by 80. The answer is 75.
4. 5,232/5: There is no need to round since the divisor is an easy number. You can simply divide 5,232 by 5. The answer is 1,046.4.
5. 366/6: Once again, there is no need to round. You can divide 366 by 6. The answer is 61.
6. 19,008/64: Let's round 19,008 to the nearest thousand, which is 20,000. Then, round 64 to the nearest ten, which is 60. Now divide 20,000 by 60. The answer is 333.33.
7. 2,622/67: Let's round 2,622 to the nearest thousand, which is 3,000. Then, round 67 to the nearest ten, which is 70. Now divide 3,000 by 70. The answer is 42.86.
8. 461/91: There's no need to round. You can divide 461 by 91. The answer is 5.07.
9. 7,952/42: Let's round 7,952 to the nearest thousand, which is 8,000. Then, round 42 to the nearest ten, which is 40. Now divide 8,000 by 40. The answer is 200.
10. 2,759/30: Let's round 2,759 to the nearest thousand, which is 3,000. Then, round 30 to the nearest ten, which is 30. Now divide 3,000 by 30. The answer is 100.
Using compatible numbers can make division calculations easier by working with numbers that are easier to divide mentally.