Page 64 - Math Genius C4

E:\Working\Orange_Education\Math_Genius_4\Open_Files\Chap-03
\ 30-Sep-2025 Bharat Arora Proof-9 Reader’s Sign _______________________ Date __________

practice time 3f

1. Estimate the following products by rounding to the nearest tens.

(a) 78 × 82 (b) 42 × 68 (c) 397 × 26

(d) 254 × 14 (e) 427 × 268 (f) 331 × 527

2. Estimate the following products by rounding to the nearest hundreds.
(a) 176 × 248 (b) 325 × 678 (c) 90 × 627

(d) 235 × 768 (e) 554 × 654 (f) 204 × 320

WorD probleMs

Example: A bakery shop sells 324 cakes in a day. How many cakes do they sell in a year?

Solution: Cakes sold in a day = 324

Cakes sold in a year = (324 × 365) (Q 1 year = 365 days)
= 118260

Thus, the bakery shop sells 1,18,260 cakes in a year.

practice time 3g

1. The price of a pair of earrings is `64. Find the total cost of 99 pairs of earrings.

2. The price of a book is `98. Find the price of 485 such books.

3. 65 passengers can sit in a bus. How many passengers can sit in

435 such buses?

4. A box contains 144 mangoes. Find the number of mangoes in 208 such boxes.

5. An almirah can hold 353 books. How many books can be kept in 234 almirahs?

6. The price of a table is `1165. What will be the price of 100 such tables?

7. The company price of a tricycle is `2553. A dealer buys 200 tricycles. How much

money does he pay to the company?

8. There are 500 packs of playing cards in a box. If each pack has 52 playing cards,
how many cards are there in the box?

9. Each tree in Abdul’s orchard gives 195 apples. Around how many apples will

184 such apple trees give? Find the estimated number of apples to the nearest

hundred.

62 Mathematics-4