Q.1.
125 gallons of a mixture contains 20% water. What amount of additional water should be added such that water content be raised to 25%?
Q.2.
106 × 106 – 94 × 94 = ?
Q.3.
Which of the following numbers gives 240 when added to its own square?
Q.4.
Evaluation of 83 × 82 × 8-5 is …………. .
Q.5.
The simplest form of 1.5 : 2.5 is …………… .
Q.6.
The square root of 0.0081 is ………… .
Q.7.
10-2 means …………. .
Q.8.
Question 3.What is the sum of 5x3 – 3x2 - 1 and 3x2 + 1?
Q.9.
The cube root of 1331 is ………… .
Q.10.
All natural numbers and 0 are called the ……………….. numbers.
Q.11.
The wages of 10 workers for a six-day week is $What are the one day’s wages of 4 workers?
Q.12.
142 × 16 = ………….. .
Q.13.
10 is equal to …………. .
Q.14.
4505 ÷ 5 = ………… .
Q.15.
10003 – 999 = ………….. .