Learning intention To multiply a two digit number by by wgv13363

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									Learning intention: To multiply a two digit number by a one digit number. Useful when you’re working with money - and
lots of other things you do!




Example:

    36 x 4 =

 Partition the number to make it easier: 36 = 30 + 4. So, to work it out, calculate 30 x 4, then 6 x 4, and add the answers
together.

  30 x 4 = 120    6 x 4 = 24   120 + 24 = 144. The old fashioned way is this:              36
                                                                                         x 4
                                                                                        ______
                                                                                          120
                                                                                           24

                                                                                             144

Now use the method to work these out: remember to estimate first, so you know if                 your answer is sensible.




a) 49 x 3 =                         g) 26 x 9 =
                                                                 Now make up some of your own to
                                                                 do - you can use one from each of
b) 54 x 4 =                         h) 68 x 7 =                  these sets of numbers or choose
                                                                 your own numbers.
c) 57 x 5 =                         i) 41 x 9 =
                                                                 39                56                98                47

                                                                 22                90                44                75
d) 23 x 7 =                         j) 84 x 5 =



e) 55 x 5 =                         k) 66 x 4 =
                                                                 2                 7                 9                 4

                                                                 3                 8                 6                 5
f) 67 x 6 =                         l) 70 x 7 =
            l) 70 x 7 =

								
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