mental computation
Post on 02-Jan-2016
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MENTAL COMPUTATION. MULTIPLICATION and DIVISION. 1. Double 12. 2. Double 50. 3. Double 33. 4. Double 66. 5. Double 45. 6. 2 x 18 =. 7. 2 x 100 =. 8. 120 x 2 =. 9. 2 x 350 =. 10. 500 x 2 =. 11. 2 x 75 =. 12. 2 x 80 =. 13. 2 x 84 =. 14. 4 x 23 =. 15. 4 x 36 =. 16. - PowerPoint PPT Presentation
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MENTAL COMPUTATION
MULTIPLICATIONand DIVISION
1
Double 12
2
Double 50
3
Double 33
4
Double 66
5
Double 45
6
2 x 18 =
7
2 x 100 =
8
120 x 2 =
9
2 x 350 =
10
500 x 2 =
11
2 x 75 =
12
2 x 80 =
13
2 x 84 =
14
4 x 23 =
15
4 x 36 =
16
5 x 70 =
17
10 x 70 =
18
10 x 78 =
19
100 x 18 =
20
Halve 24
21
Halve 16
22
Halve 48
23
Halve 500
24
Halve 160
25
86 ÷ 2 =
26
92 ÷ 2 =
27
78 ÷ 2 =
28
340 ÷ 2 =
29
400 ÷ 2 =
30
270 ÷ 10 =
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