Page 45 - Math Skill - 4

Multiplication and Division 43

(g) 3462 ÷ 3462 = ________ (h) 897 ÷ ________ = 897 (i) 9999 ÷ 9999 = ________

2. Using the rules of division by 10, 100 and 1000, find the quotient and the remainder for the
following.
(a) 345 ÷ 10 (b) 3247 ÷ 10 (c) 6843 ÷ 10 (d) 98473 ÷ 10
(e) 234 ÷ 100 (f) 1738 ÷ 100 (g) 23984 ÷ 100 (h) 684785 ÷ 100

(i) 6378 ÷ 1000 (j) 12478 ÷ 1000 (k) 238948 ÷ 1000 (l) 764125 ÷ 1000

Mathematical Problems in Real Life

Let’s Attempt

Example 1: The cost of a glass vase is ` 1999, find the cost of 25 such 1 9 9 9
glass vases. × 2 5

Solution: Cost of one glass vase = ` 1999 9 9 9 5
Cost of 25 glass vases = ` 1999 × 25 + 3 9 9 8 0
4 9 9 7 5
= ` 49975.

Example 2: During a charity show, 1050 students contributed 1 0 5 0
` 450 each. How much money was collected? × 4 5 0
Solution: Number of students = 1050 0 0 0 0
Amount contributed by each = ` 450 5 2 5 0 0

Total amount collected = 1050 × ` 450 + 4 2 0 0 0 0
= ` 472500 4 7 2 5 0 0

4 5 3
Example 3: 17214 cans of fruit juice are to be packed in cartons of 38 1 7 2 1 4
38 cans each. How many cartons are needed? – 1 5 2
Solution: Number of cans = 17214 2 0 1

Number of cans in one carton = 38 – 1 9 0
Number of cartons required = 17214 ÷ 38 1 1 4

= 453 – 1 1 4
0

Example 4: The product of two numbers is 9156. If one of the 1 0 9
number is 84, find the other. 84 9 1 5 6

Solution: The other number is 9156 ÷ 84. – 8 4
Hence, the other number is 109. 7 5

Challenge – 0 0

I am a number that is always fair, I split things equally. With a neat 7 5 6
share. If you have 64 cookies and 16 friends to feed. How many – 7 5 6
cookies each, Do you really need? 0