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Which of these is the correct halving and doubling strategy for 8 x 6?
16 x 12
4 x 12
16 x 3
4 x 3
Which of these is the correct halving and doubling strategy for 5 x 16
10 x 32
5 x 32
10 x 8
10 x 16
5 x 100 =
50
500
5
105
8 x 10 =
80
800
18
810
4 x 10 =
30
20
50
40
56 x 100 =
5600
56
560
156
20 x 100 =
20100
2000
120
200
7 x 10 =
700
70
71
710
20 x 30 =
500
600
2030
50
50 x 50 =
2500
500
25
5000
2 x 1000
2000
200
20
0
6 x 1000
600
6
60
6000
5 x 1000
6000
4000
5000
500
Which of these animals is the cutest?
Panda
Puppies!
Piglet
Baby Elephant
Which fact would you use to estimate 23 x 18?
10 x 20
20 x 20
23 x 18
20 x 30
Which fact would you use to estimate 58 x 34?
30 x 30
34 x 58
30 x 60
60 x 60
