5 x 10
50
I am halfway between 0 and 1
0.5
3 x ? = 12
4
345, 234, 153, 634
153, 234, 345, 634
Use doubling to solve 4 x 8
4 x 8 = 32
2 x 12
24
I am halfway between 0.3 and 0.5
0.4
30 รท ? = 5
6
34564, 34143, 2343, 2934
2343, 2934, 34143, 34564
Solve 6 x 5 using doubling
3 x 5 = 15
6 x 5 = 30
6 x 4
24
I am halfway between 0.35 and 0.45
0.4
4, 16, ? , 40
28
0.45, 0.9, 0.55, 0.3
0.3, 0.45, 0.55, 0.9
Use doubling to solve 9 x 7
3 x 7 = 21
6 x 7 = 42
42 + 21 = 63
12 x 6
72
I can be represented as the fraction 9/10
0.9
? x 7 = 49
7
25600, 25634, 2565, 2591
2565, 2591, 25600, 25634
Use halving to solve 7 x 8
7 x 4 = 28
7 x 8 = 56
6 x 2 x 4
48
I can be represented as the fraction 3/4
0.75
23064, ?, 23044, ?, 23024
23054, 23034
239000, 239045, 239450, 200039
200039, 239000, 239025, 239450
Use doubling to solve 8 x 35
2 x 35 = 70
4 x 35 = 140
140 + 140 = 280
8 x 35 = 280