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Math department Primary 3. Unit 1 Lesson 1 The meaning of MULTIPLICATION operation and its properties.

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Presentation on theme: "Math department Primary 3. Unit 1 Lesson 1 The meaning of MULTIPLICATION operation and its properties."— Presentation transcript:

1 Math department Primary 3

2 Unit 1 Lesson 1 The meaning of MULTIPLICATION operation and its properties

3 Can you remember A cow has …………… legs.

4 Complete in the same way :- a)7 x 2 = ……… + ……… = ……… b)8 x 5 = …… + …… + …… + …… + …… = …… c)4 x 4 = …… + ……… + ……… + ……… = ……… d)9 x 1 = ……………………………………… = …………

5 Do you know??? 2 x 6 = ………… 2 x 6 = 6 x 2 6 x 2 = ………… So

6 Solve that : a)8 x 6 = ………… x ………… = ……… b)5 x 9 = ………… x ………… = ……… c)4 x 7 = ………… x ………… = ……… d)3 x 6 = ………… x ………… = ………

7

8 Let’s revise: *3 x 6 = ……… *5 x 4 = ……… *4 x 8 = ……… *6 x 2 = ……… *5 x 9 = ……… *4 x 4 = ……… *7 x 0 = ……… *3 x 5 = ……… *8 x 8 = ……… *6 x 5 = ……… *2 x 7 = ……… *5 x 5 = ……… *8 x 1 = ……… *9 x 4 = ………

9 You must also know that:- Ex:

10 School book P.5 3 x 2 = 3 + ……, 7 x 4 = 7 + …… 6 x …… = 6 +6 +6 +6, 8 x 3 = ……… 5 + 5 + 5 = 5 x ……, 9 + 9 = …… x …… 7 +7+7+7+7 = …… x ……, 1 + 1 = …… x …… 1)Complete:-

11 School book P.5 3 x 7 = ………, 4 x 5 = ……… 8 x 2 = ………, 6 x 4 = ……… 2 x 9 = ………, 3 x 8 = ……… 2 x …… = 10, 4 x …… = 28 ……x 6 = 30, ……x 1 = 7 ……x 5 = 35, ……x ……= 1 2)Complete:-

12 School book P.5 6 x 5 = 5 x ………, 4 x …… = 7 x 4 ……x 2 = 2 x 9, 3 x 5 x 4 = …… x 4 2 x 6 x 5 = ……x 5, 3 x 5 x 4 = 3 x …… 6 x 2 x 2 = 6 x ……, 5 x……x 6 =25 x…… …… x……x9 = 2 x 9, 8 x 9 = 4 x …… x9 12 x 7 = 2 x…… x 7, 4 x 5 x 6 = 30x …… 3)Complete:-

13 Booklet P. 2, 3, 4,7 and 6 except ex: d,h


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