What Is The Break Apart Strategy In Mental Math Strategies?

8 Answers

Andre Williams Profile
Andre Williams answered
It is in math,where you have for an (ex.)3x57 so you take 57 and take 50 and solve 3x50=150 then take the ones and you multiply 3x7 =21 then add 150+21=171 I learned this in class today and I'm 10 years old!
Anonymous Profile
Anonymous answered
Break apart is a strategy for multiplication. For example, to multiply 36 and 4, you first break apart the 36 into 30 and 6, now multiplyl both with muliplier 4. And then add both of them. Like 30*4 + 6*4 = 120 + 24 = 144

This is easier and faster method.

Anonymous Profile
Anonymous answered
First subtract your tens places 80-50=30.
Then subtract your ones places 4-2=2
Then add the differences 30+2=32
Achieves the same answer 84-52.

What *I* don't get is WHY we are teaching kids to work math this way. It does not seem easier.
Aisha Profile
Aisha answered
It is a strategy for multiplication.
For Example: To multiply 35 and 6, break apart the 35 into 30 and 5, which are easier to multiply by 6, and then compute

35*x6 = (30+5)*6 = 30*6 + 5*6 = 180 + 30 = 210.
Anonymous Profile
Anonymous answered
Break apart  6 times 24

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