Page 127 - Start Up Mathematics_4

Let’s Review – 1

I. Choose the correct answer.
1. 10,00,000 = ____________ tens

(a) 1,00,000 (b) 10,000 (c) 1,000 (d) 100
2. CMLXXX – DCLIX = ____________

(a) CCCXXV (b) CCCXXXI (c) CCCXXI (d) CDXXXI
3. The value of 49,05,144 – 38,92,608 + 1,55,016 is ____________.

(a) 11,77,542 (b) 11,67,552 (c) 12,67,452 (d) 12,76,552
4. The product 8,724 and 65 is ____________.

(a) 5,76,060 (b) 5,67,600 (c) 5,76,600 (d) 5,67,060
5. The quotient obtained when 7,498 is divided by 23 is ____________.

(a) 326 (b) 336 (c) 236 (d) 362
6. The first three multiples of 18 are:
(a) 18, 34, 56 (b) 18, 36, 54 (c) 18, 32, 56 (d) 18, 56, 72

7. The prime factorization of 36 is:
(a) 3 × 3 × 3 × 3 (b) 2 × 2 × 2 × 3 (c) 2 × 3 × 3 × 3 (d) 2 × 2 × 3 × 3

II. Solve and answer.
1. Put the correct sign <, > or =.

(a) DVIII DXIX (b) 974 CMLXXIV (c) MCDLXII CMXLVII

2. 4,79,654 rounded to the nearest thousand is ____________.
3. From the sum of the largest 6-digit number and the smallest 6-digit number,
subtract the largest 5-digit number. ____________

4. 49,876 ÷ 1,000 gives quotient = ____________ and remainder = ____________.
5. The first five multiples of 21 are ________________________.

6. 48 expressed as the product of its prime factors is ____________.
7. 3,127 × 300 = ____________

8. 400 × 126 ÷ 6 – 340 + 110 = ____________
III. Short and long answer questions

1. Find the smallest and the greatest 7-digit numbers, formed using the digits
3, 9, 0, 4, 2, 1, 7.
2. Write the number name for 78632015 in Indian and International number system.
3. Find the following products using the column method.

(a) 753 × 48 (b) 4,621 × 395

119
119