# Building With Bricks – Chapter1/Class 4

**MODEL QUESTIONS FOR CBSE CLASS 4 MATHEMATICSBuilding With Bricks – Chapter 1Answer the following:**

- Write the number before 2, 05,070 and its number name?
- Write the number after 9, 99,801 and its number name?
- Write the missing numbers?

a) 8445, 8345, —–, —–, ——

b) 4820, 4840, —–, —–, —— - Arrange the following numbers in ascending order.

8435, 3485, 8534, 8345. - Arrange the following numbers in descending order.

2404, 4024, 2044, 4402 - Find the sum of the largest and the smallest 4 digit number formed by the digits 7, 0, 2 and 5.
- Find the sum of the place values of 4 in 2,48,342.
- Write the number name of:

a) 2,44,021

b) 38,045 - Write the standard form of

a) 40000 + 3000 + 200 + 5

b) 80000 + 500 + 3 - If the cost of 20 books is Rs 3600, what is the cost of 80 such books?

**ANSWERS:**

- The number before 2, 05,070 is 2, 05,069.

Number name is two lakh five thousand sixty nine. - The number after 9, 99,801 is 9, 99,802.

Number name is Nine lakh ninety nine thousand eight hundred two. - a) 8245, 8145, 8045……

b) 4860, 4880, 4900……. - 3485, 8345, 8435, 8534.
- 4402, 4024, 2404, 2044.
- Largest number is 7520 and smallest number is 2057.

Sum = 7520 + 2057 = 9577. - The place values of 4 are 40 and 40000.

Sum = 40000 + 40 = 40040. - a) 2,44,021 – Two lakh forty four thousand twenty one.

b) 38,045 – Thirty eight thousand forty five. - a) 43205

b) 80503 - Cost of 20 books = 3600

Cost of one book = 3600/20 = 180

Therefore, cost of 80 such books = 180 x 80 = 14400 rupees.