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