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E:\Working\Focus_Learning\Math_Genius_3_(11-09-2024)\Open_Files\CHAP_04
\ 12-Sep-2024 Surender Prajapati Proof-5 Reader’s Sign _______________________ Date __________

2. Find the product of given pair of numbers in each case. Observe that the change
in the order of numbers does not affect the product.

(a) 14 × 8 (b) 53 × 7 (c) 42 × 16 (d) 14 × 20

8 × 14 7 × 53 16 × 42 20 × 14

3. Find the estimated product as well as the actual product of the following.
(a) 55 × 24 (b) 28 × 13 (c) 63 × 34 (d) 44 × 33

(e) 58 × 22 (f) 42 × 24 (g) 73 × 19 (h) 45 × 19

WorD probleMs

Example 1: A bus can carry 52 passengers. How many passengers can be carried by 36
buses? th H t O

Solution: Number of passengers a bus can carry = 52 5 2
Number of buses = 36 × 3 6

So, number of passengers that 36 buses can carry 3 1 2
= 52 × 36 = 1872 + 1 5 6 0
1 8 7 2
Therefore, 36 buses can carry 1872 passengers.
Example 2: A packet contains 144 balloons. Find the number of balloons in 24 such packets.
Solution: Number of balloons in one packet = 144 th H t O

Number of packets = 24 1 4 4
So, the number of balloons in 24 such packets × 2 4
5 7 6
1st product
= 144 × 24 = 3456 balloons + 2 8 8 0 2nd product
Therefore, 24 packets contain 3456 balloons. 3 4 5 6 Sum

practice time 4g

Solve the following word problems.
1. A class has 46 students. Each student contributes `25 for the identity card. How much

money is collected in the class?
2. A matchbox contains 50 matchsticks. How many matchsticks will be there
in 73 matchboxes?

3. A packet contains 184 paper clips. Find the number of paper clips in 24 packets.
4. A garland contains 135 beads. How many beads will 36 garlands contain?
5. A box of chocolates has 24 slabs in it. How many slabs will there be in 134 boxes?

6. A wooden chair costs `175. Find the cost of such 34 chairs.

80 Mathematics-3