Page 154 - New Medley 4 Semester 1

Example 2: Multiply: 235612 × 7.

Solution: 235612 × 7 = (200000 + 30000 + 5000 + 600 + 10 + 2) × 7

= 200000 × 7 + 30000 × 7 + 5000 × 7 + 600
× 7 + 10 × 7 + 2 × 7

= 1400000 + 210000 + 35000 + 4200 + 70 + 14

= 1649284

EXERCISE 3.2

A. Multiply:

1. 1 4 8 3 7 2. 1 3 1 2 9

× 1 5 × 1 6

3. 1 2 4 0 7 5 4. 2 4 1 8 7

× 1 7 × 1 8

5. 3 2 1 6 2 6. 1 3 4 3 0 9

× 1 9 × 2 0

B. Multiply.

1. 14289 × 16 2. 153351 × 16 3. 42739 × 17

4. 245716 × 17 5. 24607 × 18 6. 233289 × 18

7. 23597 × 19 8. 212345 × 19 9. 26247 × 20

C. Find the product using expanded notation.
1. 33159 × 9 2. 42873 × 8 3. 18337 × 7

4. 195121 × 5 5. 213771 × 4

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