How To Multiply Two Digit Numbers In Your Head

Here the implied first step is to round 42 to 40 but that doesn t mean we forget about the 2. Instead we recognize that 40 2 42 and rewrite the equation with 42 broken up. 6 x 2 x 2 24.

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Let s take a look at an example of solving a multiplication problem in your head.

How to multiply two digit numbers in your head. This series of videos first. If you know 6 x 4 24 you don t have to break it down into 6 x. Fast mental multiplication trick multiply in your head using base 10 this mental multiplication trick uses the idea of a third number a base number to help us multiply two numbers in your head. This mental multiplication trick uses the idea of a third number a base number to help us multiply two numbers in your head.

14 12 15 13 17 12 8 17 9 9 19 21 14 13 9 18. Now bring back that ten 24 x 10 240. When multiplying a 2 digit number by a 1 digit number you can use both mental and written methods. This means 6 x 40 240.

Break down the calculation as much as you need to. This lesson looks at multiplying numbers near 10 using base 10. Round 42 down to nearest ten and add.

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