Correct Answers: | |

Wrong Answers: | |

Unattempted: |

### Question 1

What is 447 × 49?

**A**

21903.

**B**

21912.

**C**

21894.

**D**

21921.

**Soln.**

**Ans: a**

This is a multiplication by a number whose units place is 9. Proceed like this: 447 × 49 = 447 × (40 + 9) = 447 × (40 + 10 - 1) = (447 × 40) + (447 × 10) - 447 = 17880 + 4470 - 447 = 21903. The other approach could have been 447 × 49 = 447 × (50 - 1), etc.,

### Question 2

A bag contains equal number of coins each of Rs. 1, 5 and 10. What is the total number of coins in the bag, if the total money is Rs. 432?

### Question 3

The value of x for which the value of |8x - 32| is minimum is?

### Question 4

What is 561 × 9?

**A**

5049.

**B**

5058.

**C**

5040.

**D**

5067.

**Soln.**

**Ans: a**

This is a multiplication by 9. Proceed like this: 561 × 9 = 561 × (10 - 1) = 561 × 10 - 561 = 5610 - 561 = 5049. Sometimes, the options can be ruled out by examining the units places, but for simpler cases these shortcuts will help you save time overall.

### Question 5

1/8 of a boy's score in Maths exceeds 1/22 of his score in English by 15 marks. What is his score in English, if his total score in English and Maths is 210?

### More Chapters | See All...

Passwords and Inputs | Coding Decoding | Simple Interest | Analogies | Paper Cutting | Volume and Surface Areas | Logarithms | abba Series | Percentages | Alphabet Number Series | More...

This Blog Post/Article "Basic Simplification Quiz Set 012" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2019-08-18.