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Friday 14 June 2013

Inverse Division

Inverse and division
Write the inverses to these sums.
LOOK 5x3=15     15÷3=5
4x6=24
24÷6=4
6x2=12
12÷2=6
7x4=28
28÷4=7
9x3=27
27÷3=9
2x7=14
14÷7=2
8x6=48
48÷6=8
4x9=36
36÷9=4
3x7=21
21÷7=3
6x5=30
30÷5=6
9x5=45
45÷5=9
8x4=32
32÷4=8
7x9=63
63÷9=7
2x4=8
8÷4=2
6x9=54
54÷9=6
5x4=20
20÷4=5
8x9=72
72÷9=8
6x3=18
18÷3=6
4x8=32
32÷8=4
10x3=30
30÷3=10
6x4=24
24÷4=6
3x3=9
9÷3=3
10x7=70
70÷7=10


Extension: Use the table below and write the 6,8 & 12Xs facts in them. Fill in the inverse division yourself.


  6X3=18
18÷3=6
6X4=24
24÷4=6
  8X7=56
56÷7=8
8X5=40
40÷5=8
12X5= 60
60÷5=12
12X2=24
24÷2=12
  6X5=30
30÷5=6
6X7=52
52÷7=6
  8X12=96
96÷12=8
8X6=48
28÷6=8
12X12= 144
144÷12=12
12X8=96
96÷8=12

Extension: Complete the following word problems

Multiplication Problems
Write the sum and find the answer.
1) There are 8 crayons in a pot. How many crayons in
5 pots?40 CRAYONS
.................................................................
2) There are 2 wings on one bird. How many
wings on 9 birds?18 WINGS
................................................................
3) One dog has 4 legs. How many legs on 12
dogs?48 LEGS
.........................................................
4) One banana costs 10p. How much do three dozen
bananas cost?$3.60p
.............................................
5) There are 5 points on one star. How
many points on 9 stars?45 POINTS
..................................................................
6) There are six people in the running team. How
many people in 8 teams?48 PEOPLE
..................................................................
7) Apples cost 9p each. How much for 12 apples?81p
...................................................................
8) There are 4 leaves on each plant. How many
leaves on 20 plants?80 LEAVES

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