17 x 2 = 34
702 x 8 = 6478
57 x 74 = 21798
3 x 54 = 3022
77 x 40 = 20880
127 x 36 = 33772
Each red box represents a missing digit.
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17 x 20 = 340
702 x 89 = 62478
577 x 374 = 215798
53 x 574 = 30422
477 x 440 = 209880
1427 x 236 = 336772
Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.
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The 1st December is the date to start opening the doors of the 2020 Mathematics Advent Calendar.