Primes and composites
Jade is using a one hundred square grid to record the times tables facts. She writes each multiplication fact in the square that corresponds to the answer.
1 11 21 3 × 7
2 12 22 2 × 6 3 × 4 2 × 11
3 13 23
4 14 24 2 × 2 2 × 7 2 × 12 3 × 8 4 × 6
5 15 25 3 × 5
6 16 26 2 × 8 4 × 4 2 × 3
7 17 27 3 × 9
8 18 28 2 × 9 3 × 6 2 × 14 4 × 7
9 19 29
10 20 30 2 × 10 4 × 5 2 × 15 3 × 10 6 × 5
2×4 3×3 2×5
5×5 2×13
The numbers that she can make from a multiplication fact are called composite numbers.
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28/04/2022 12:11
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