Page 144 - New Medley 5 Semester 1

EXERCISE 2.3

A. Find the product of the following:

1. 35 × 100 2. 867 × 20 3. 5174 × 1000

4. 328 × 500 5. 1034 × 800 6. 254 × 7000

B. Multiply using short-cut tricks.

1. 76 × 5 2. 62 × 25 3. 236 × 50

4. 858 × 25 5. 4972 × 50 6. 1334 × 5

C. Find the product without performing actual multiplication.

1. 272 × 99 2. 3981 × 999 3. 54 × 9999
4. 4274 × 999 5. 87 × 101 6. 2358 × 11

7. 4063 × 1001 8. 725 × 11

D. Multiply the following using short-cut tricks.
1. 35 × 35 2. 75 × 75 3. 55 × 55

4. 95 × 95 5. 105 × 105 6. 145 × 145

7. 850 × 850 8. 115 × 115

E. Find the product without actual multiplication.

1. 54 × 9 = 2. 63 × 99 =

3. 74 × 999 = 4. 82 × 11 =

5. 125 × 101 = 6. 243 × 1001 =

Division

Division is the inverse process of multiplication. We follow the same rule
for dividing the large numbers as followed earlier for small numbers. We

use a relationship called division algorithm to check whether the result is
correct or not.

This algorithm is as follows:

Dividend = Quotient × Divisor + Remainder

142