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# Division review

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### Transcript of "Division review"

1. 1. Division A Quick Review!
2. 2. Vocabulary Quotient: the answer to a division problem Dividend: the 4 number being divided 9 36 Divisor: thenumber that divides the dividend The problem shown above can also be written like this: 36 ÷ 9 = 4
3. 3. 48 ÷ 6 = 8Which number is the dividend?Which number is the quotient?
4. 4. 11 12 132Which number is the divisor?Which number is the quotient?
5. 5. Division• When dividing, think sharing equally.• Let’s try dividing by placing the same number of items in groups.• Grab your goldﬁsh crackers...
6. 6. Let’s say you have 15 goldﬁsh crackers. You want to share these crackers with 3 friends. Each friend needs to have the same number of crackers. How many will each get? Friend 1 Friend 2 Friend 3
7. 7. Let’s say you have 15 goldﬁsh crackers. You want to share these crackers with 3 friends. Each friend needs to have the same number of crackers. How many will each get? Friend 1 Friend 2 Friend 3 Each friend gets 5 crackers with none leftover.
8. 8. Let’s try another exampleJayne wants to share her 19 crackers with 4friends. If each friend gets the same number of crackers, how many will each get?
9. 9. Jayne wants to share her 19 crackers with 4 friends. If each friend gets the same number of crackers, how many will each get?Friend 1 Friend 2 Friend 3 Friend 4 4r3 4 19 Each friend gets 4 crackers. In this case, there will be 3 crackers left over. This number, 3, is the remainder.
10. 10. Another Division StrategyYou probably remember that multiplication is repeated addition. Division can also be thought of as repeated subtraction!
11. 11. 18 ÷ 3 1. Whatever the dividend is, keepsubtracting the divisor until you get to 0 or an answer that is less than your divisor.2. The amount of times you subtracted is your quotient or your answer!! Yeah!!
12. 12. 18 ÷ 3 1. Start with 18 goldﬁsh crackers.2. How many times did you subtract 3?
13. 13. 18 Repeated -3 1 To get the answer, count the number of times youSubtraction 15 subtracted 3. -3 2 12 -3 3Keep subtracting 3 until you reach zero! 9 -3 4 6 -3 5 3 -3 6 18 ÷ 3 = 6 0
14. 14. 21 ÷ 4 1. Start with 21 goldﬁsh crackers.2. How many times did you subtract 4?
15. 15. Repeated 21 To get the answer, count the number of times you -4Subtraction 1 subtracted 4. 17 -4 2 Keep subtracting 3 until 13 you reach zero! -4 3 9 -4 4Since you can’t subtract 4 from 5 1, this number becomes your -4 5 remainder. 1 21 ÷ 4 = 5 r 1
16. 16. Use repeated subtraction to solvethe following division problems on your slates. 28 ÷ 9 72 ÷ 12
17. 17. ClosureAnswer the following question on your slate:What are two strategies you can use to solve division problems?
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