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Thursday 7 September 2017

Solving time tables.

Use your knowledge of  5x and 2x tables to solve your 7x tables
5 + 2 = 7

Problem
Break it down
Add it up
Answer
3 x 7 =
3x2 + 3x5 =
6 + 15 =
21
4 x 7 =
4x2=8 5x4=20
20+8=28
28
5 x 7 =
5x5=25 2x5=10
25+10=35
35
6 x 7 =
6x5=30      6x2=12
30+12=42
42
7 x 7 =
7x5=35      7x2=14
35+14=49
49
8 x 7 =
8x5=40      8x2=16
40+16=56
56
9 x 7 =
9x5=45       9x2=18     
45+18=63
63

Use your knowledge of 2x and 10x tables to solve your 12x tables
10 + 2 = 12

Problem
Break it down
Add it up
Answer
2 x 12 =
2 x 10 + 2 x 2 =
20 + 4 =
24
3 x 12 =
3x10=30 2x3=6
30+6=36
36
4 x 12 =
4x10=40     4x2=8
40+8=48
48
5 x 12 =
5x10=50      5x2=10
50+10=60
60
6 x 12 =
6x10=60       6x2=12
60+12=72
72
7 x 12 =
7x10=70       7x2=14
70+14=84
84
8 x 12 =
8x10=80        8x2=16
80+16=96
96
9 x 12 =
9x10=90        9x2=18
90+18=108
108
10 x 12 =
10x 10=100      10x2=20
100+20=120
120

1 comment:

  1. This is great Israel! I can clearly see how you solved these problems using your knowledge of the 2 and 5 times tables. You have taught me something new!

    Well done! It looks like you are still enjoying maths a lot!

    From Ms nalder

    ReplyDelete

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