It is very easy to use multiplication to divide. Think of multiplication as putting groups of things together and dividing as taking them apart. for example, if we had 5 California Poppys in each group, and we had 3 groups, we would have 15 total. This is multiplication at its simplest: 3 groups of 5 is the same as 3x5 which is 15 total.
3x5=15
Now let's suppose we have 15 California Poppys and we need them to be placed into 3 different vases. Each vase must have the same number of poppys in it to make it fair. We are now going to divide the group of 15 California Poppys into 3 smaller groups. This is division: 15 Poppys total divided into 3 smaller groups is the same as 15/3 which is 5.
15/3=5.
These are the opposites: 3x5=15 and 15/3=5. 15/5=3 and 5x3=15.
To make it easy to divide, you can use multiplication. if you know that 5x3=15, then you can say 15/?=3 or what times 3=15. Turn around the problem, and you have a multiplication problem to answer your division problem.
15/3=? 3x?=15. Oh ya, 3x5=15, so then: 15/3 must = 5!!
It is that simple: Now you try: Multiply and divide and post your answers as a comment...
6x2=12 what is 12/2?
4x5=20 what is 20/4?
9x3=27 what is 27/9?
3x5=15
Now let's suppose we have 15 California Poppys and we need them to be placed into 3 different vases. Each vase must have the same number of poppys in it to make it fair. We are now going to divide the group of 15 California Poppys into 3 smaller groups. This is division: 15 Poppys total divided into 3 smaller groups is the same as 15/3 which is 5.
15/3=5.
These are the opposites: 3x5=15 and 15/3=5. 15/5=3 and 5x3=15.
To make it easy to divide, you can use multiplication. if you know that 5x3=15, then you can say 15/?=3 or what times 3=15. Turn around the problem, and you have a multiplication problem to answer your division problem.
15/3=? 3x?=15. Oh ya, 3x5=15, so then: 15/3 must = 5!!
It is that simple: Now you try: Multiply and divide and post your answers as a comment...
6x2=12 what is 12/2?
4x5=20 what is 20/4?
9x3=27 what is 27/9?
Caliofrnia state standards this addresses: Grade Three, Algebra and Functions 1.0 and 2.0.
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