Page 38 - SK Year 5 Mathematics DLP
P. 38

9    What is the product of 12 502 and 38?

                      12 502 × 38 =
                                                                                   Partition 12 502
                                                                                   and 38 based on
                       Step 1                                                      digit values.

                     12 502 = 10 000 + 2 000 + 500 + 0 + 2
                          38 = 30 + 8







                       Step 2                                                         Step 3

                                                                                       1 1
                          ×         10 000      2 000       500       0     2
                                                                                       3 8 0 0 0 0
                          30       300 000     60 000 15 000          0    60             7 6 0 0 0
                                                                                          1 9 0 0 0
                          8          80 000     16 000     4 000      0    16        +           7 6

                        Total      380 000     76 000 19 000          0    76          4 7 5 0 7 6


                      12 502 × 38 =  475 076

                      The product of 12 502 and 38 is 475 076.




                 10     30 708 × 19 =


                          ×         30 000       0         700    0       8

                          10      300 000        0       7 000    0     80

                           9        27 000       0       6 300    0     72
                        Total     327 000        0      13 300    0    152


                                  3 2 7 0 0 0
                                    1 3 3 0 0
                                +         1 5 2      What is the mistake made
                                  3 3 0 4 5 2        in the calculation? Discuss.






              30                     • Emphasise the importance of memorisation of times table for an
                               1.6.3   easier multiplication process involving any two numbers.
                                     • Surf https://www.ixl.com/math/grade-5/box-multiplication
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