Multiplication Magic
We are learning to use place value to solve multiplication problems using whole numbers.
Times table practice:
5 x 5 =25 7x7= 49
4 x 4= 16 8 x 8=69
3 x 3 = 9 11x 11=121
6 x 6= 36 5 x 4=20
9 x 9 = 81 10 x 10=100
Factors of 16 = 2,4,8,16
Multiples of 8 = 8,16,24,32,40,48,56,64,72,80
A prime number is 1,3,5,7,11,13,17,19,21
25 x 25 = 625
20 x 25 = 500
5 x 25 = 125
25 x 245 = 6125
200 x 25 = 4000
40 x 25 = 1000
5 x 25 = 125
267 x 250 = 66750
200 x 267 = 53400
50 x 267 = 13350
Show your working under each problem:
1. Mrs Flavelle orders 15 boxes of cookies for camp. If each box contains 18 cookies. How many are there altogether?
3410x10=100
5x8=40
100+40=140
2. Mrs Tele’a orders 12 cans of beans for camp. Each tin contains 240 beans. How many individual beans has she ordered?
240 x 12
200 x 10 = 2000
40 x 2 = 80
2080
3. Room 4 is baking a rectangular cake for the garage sale. It is 22cm long and 16cm wide. What is the area of the cake? 22 x 16=352
20 x 10 = 200
2x6=12
200 + 12 = 212
4. Marika has brought some lollies in to share with the class for her birthday. She has brought 14 packets which contain 32 lollies each. How many lollies are there altogether?
32 x 14
16 x 14= 244
244 x 2= 488
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