Olympiad Test Level 1: Computing Operations - Class 3 MCQ

According to order

property of addition, the numbers can be added in any order. So,

165 + 52 + 10 = 52 + 165 + 10

8 × 5 = 40 and 40 ÷ 8 = 5

• Start with the expression: 100 – 10 – (100 – 10).
• First, simplify the parentheses: (100 – 10) equals 90.
• Now the expression looks like: 100 – 10 – 90.
• Simplify further: 100 – 10 equals 90.
• Finally, 90 – 90 equals 0.

1,727 + 6,475 = 8,202

The product of one’s digits, that is, 3×7 = 21. So, the one digit of the product will be 1. The

product of 347 and 23 is 7,981.

Last digit is 2, so it is an even number. Thus 112 is divisible by 2. The factors of 112 are 1, 2, 4, 7, 8, 14, 16, 28, 56, and 112.

4 + 14 + 1 = 18 + 1 = 19

It means that additive identity is “0” as adding 0 to any number, gives the sum as the number itself. For any set of numbers, that is, all integers, rational numbers, complex numbers, the additive identity is 0.

So here, 14 + 0 = 14 is the correct answer.

One number is 300 greater than 600 = 600 + 300 = 900
Difference = 400
Other number = 900 – 400 = 500

111 + 9 = 120 = 113 +7

• Start by dividing 63 by 7.
• 63 ÷ 7 equals 9.
• So, there are nine 7s in 63.

Number of chairs in each row = 500 ÷ 10 = 50

43 is more than 33.

6523 + 2364 = 8887

So, digit 8 is hundreds of places.

0 divided by any number gives 0.

So, 0 ÷ 3 = 0.

Smallest odd number after 4,386 is 4,387.

4,387 + 632 = 5,019

Sandhya Travelled B to C is 379 m , then she travelled C to A which is 379 + 262 = 641 m
Total she travelled = 1,020 m