Test Preparation on Simplification-Approximation for Competitive Exam

Find out the approximate value which should replace the question mark (?) in the following questions. (You are not expected to find out the exact value)
0.0004 ÷ 0.0001 × 36.000009 =?

Find out the approximate value which should replace the question mark (?) in the following questions. (You are not expected to find out the exact value)
137% of 12345 = ?

Find out the approximate value which should replace the question mark (?) in the following questions. (You are not expected to find out the exact value)
3739 + 164 × 27 = ?

Find out the approximate value which should replace the question mark (?) in the following questions. (You are not expected to find out the exact value)
447.75 ÷ 28 × 4.99 = ?

Find out the approximate value which should replace the question mark (?) in the following questions. (You are not expected to find out the exact value)
(3.5)2 × 19.25 + ? = 275

Find out the approximate value which should replace the question mark (?) in the following questions. (You are not expected to find out the exact value)
85% of 225 + 32.91 × 5.01 =?

Find out the approximate value which should replace the question mark (?) in the following questions. (You are not expected to find out the exact value) (15.96)2 + 75% of 285 = ?

Find out the approximate value which should replace the question mark (?) in the following questions. (You are not expected to find out the exact value)
1679 ÷14.95 × 5.02 = ?

Find out the approximate value which should replace the question mark (?) in the following questions. (You are not expected to find out the exact value)
5237.897 – 6629.010+7153.999 - 2205.102 = ?