Representing multiplication
Here is a 100 square. Start by counting by twos. What do you notice about the numbers you say? Now count by fives. What do you notice this time? Finally count by tens. Where are all these numbers on the square? Which numbers appear in all the counts you made?
10 20 30 40 50 60 70 80 90 100
9 19 29 39 49 59 69 79 89 99
8 18 28 38 48 58 68 78 88 98
7 17 27 37 47 57 67 77 87 97
6 16 26 36 46 56 66 76 86 96
5 15 25 35 45 55 65 75 85 95
4 14 24 34 44 54 64 74 84 94
3 13 23 33 43 53 63 73 83 93
2 12 22 32 42 52 62 72 82 92
1 11 21 31 41 51 61 71 81 91
How many different ways can you arrange 12 coconuts into equal rows? Use counters or other small objects to help you. What do you notice?
1 We can show the multiplication sentence 6 × 2 in different ways. (a) There are 2 pineapples in each group. There are 6 groups of pineapples.
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03/05/2022 10:18
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