Page 150 - New Medley 3 Semester 1

EXERCISE 4.6

Multiply:

1. 60 × 30 = 2. 70 × 40 = 3. 90 × 70 =

4. 80 × 60 = 5. 70 × 50 = 6. 60 × 50 =

7. 80 × 90 = 8. 70 × 30 = 9. 40 × 30 =

Multiplying by 200, 300, 400, …, 900

Example 8: Multiply 3 by 200
H T O
Solution: 3 × 200 = 3 × 2 hundreds = 6 hundreds = 600
2 0 0
Multiply 3 by 2 and put two zeros on the right
× 3
of the product.
6 0 0
Example 9: Multiply 12 by 700
Solution: 12 × 700 = 12 × 7 hundreds = 84 hundreds = H T O

8400 7 0 0

Multiply 12 by 7 and put two zeros on the × 1 2
right of the product. 8 4 0 0

To multiply a number by 200, 300, 400, etc., we multiply the given number
respectively by 2, 3, 4, etc. and insert two zeros on the right of the product.

EXERCISE 4.7

Multiply:

1. 2 × 200 = 2. 3 × 300 = 3. 4 × 400 =

4. 5 × 500 = 5. 4 × 600 = 6. 8 × 700 =

7. 7 × 800 = 8. 9 × 800 = 9. 6 × 900 =

Multiplication Stories

Multiplication fact table can be used to solve simple problems on
multiplication.

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