What approximate value should come in the place of question mark (?) in the following expression? 9.1 × 34.98 − 2969.97 ÷ 18.05 × 6.96 + ? = 48.1 × 11.05

Which of the following is the closest approximation to the product of 0.2222 × 0.16 × 0.399 × 0.115 × 20?

What approximate value should come in place of the question mark (?) in the following expression? (Note: You are not expected to calculate the exact value.)3199.98 ÷ 79.99 × 45.02 = ? + 124.97