Simplification and Approximation

Directions: What approximate value should come in place of the question mark (?) in the following question? (Note: You are not expected to find out the exact value). 2^? + 5.01 × 19.99 × 3 + 115 = 419

What approximate value should come in place of the question mark (?) in the following equation? 7750.02 × 29.99% + 702.04 ÷ 0.9 – 50.05 × √80.99 = ?

If a, b, c and d are four numbers such that b is 50% of a, c is 25% less than b, d is 10% more than c, and a is k% more than d, then what is the approximate value of k?

What approximate value should come in place of the question mark (?) in the following equation? (You are not expected to calculate the exact value.) 285.316 + (361.035)^1/2 - 43% of ? = 282

Directions: What approximate value will come in place of the question mark (?) in the following questions? (You are not expected to calculate the exact value) 40.02% of 620 + 34.89% of 4500 + ? = (324.12)²/17.98

Directions: What approximate value should come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.) 49.99% of 1747 − 21.99% of 1302 = ?

What approximate value will come in place of question mark (?) in the following equation? 3424.3424 + 4812.4812 · (7.992 ÷ 2.024) × (8.82 ÷ 3.353) - 2.235 = ?

What approximate value will come in place of question mark (?) in the following equation? (88)² - (33)² + (5.1)² - (69)² = ? + 659.05

What approximate value will come in place of question mark (?) in the following equation? (989% of 1000) - (688% of 1100) + (288% of 1200) = ?

What approximate value will come in place of the question mark (?) in the following question? 19.199 × ? + 741.419 ÷ 12.512 = 303.633

What approximate value should come in place of the question mark (?) in the following question? (You are not expected to find out the exact value.) 9228.789 - 5021.832 + 1496.989 = ?

What approximate value should come in place of the question mark (?) in the following question? (You are not expected to find out the exact value.) 39% of 695 = 10% of ?

What approximate value should come in place of the question mark (?) in the given equation? (23.99)2 + (11.99)2 - ? = (26.01)2 + (7.01)2