Practice Approximation Questions and Answers

• From a point on the ground, the angle of elevation to the top of a tree is 30 degrees. If you walk 20 feet closer to the tree, the angle of elevation becom...
• A can complete a piece of work in 15 days. B is 30% more efficient than A. If they work together, how many days will it take to complete the work?
• The base of a prism is an equilateral triangle with a perimeter of 36 cm. If the height of the prism is 12 cm, calculate the volume of the prism....
• 23.98% of 624.99 = 19.98% of ? + 14.98% of 639.99
• 3.934 - 124.07 + 35.94 + 12.83 of 4.85 - 84.76 ÷ √26 = ?3 
• 50.098% of 7000.072 ÷ 69.6969 + 75.093 of 15.98 = ? × 4.983 
• (32.18% of 2399.89 - √624 × 26.25) % of 149.79 = ?
• 75.01 + 344.923 - 179.93 = ?3 of (√678 + 3.89)
• ? = {29.7% of (97.72 × 40.04)} ÷ 3.92
• ? = 41.92% of 49.96% of (45.07 1.97 – 4.98 2.03 )
• ? = (6.1 × 64.93 ÷ 12.86) 1.97 – 49.98% of 359.77
• 22.11 × 7.02 – 70.12% of 209.69 + 227.21 = ?
• 648.13 ÷ 35.86 + 28.88 × 13.13 – 39.92% of 900.19 = ?
• (424.98 ÷ 16.99 + ?) × 1.99 - 211.99 ÷ 2.01 = 24.98 × (4.012 - 3.99) 
• 74.99 x 175.01 - 75.12 x 154.98 + + 39.98) x 3.98 = (785.01 + 265.01) x 1.99
• 587.89 - (342.99) 0.99 + 139.99% of (5.01) 0.99 = 2.99 ? + (2.99) 1.98
• 139.88% of 119.89 + 1451.89 ÷ 6.01 - √196.01 = ? ÷ 3.01 + 215.98 
• 660 × ? + 495.85 - 60% of 9650 = 37.5% of 7200
• 31.98% of 224.99 = 24.98% of ? + 9.91% of 499.99
• ? 2 + (39.99 × 10.99 + 7.01) - (39.99 × 2.99 2 + 21.99) = 21.99 × 23.01
• 24.99 × 32.05 + ? - 27.01 × 19.97 = 29.99 × 27.98
• 386.99 + 397.99 + ? - 232.02 = 35.02 × 31.99
• 1784.04 - 483.98 + 464.98 ÷  15.06 = ?3
• 5.25 x 4.09 + 3.99 x 9.67 + 6.01 x 14.88 = ?
• 19.89% of 449.67 + 14.67% of 299.89 - 9.89% of 99.79 = ?
• 9.89 x 4.99 + 2.01 x 49.89 = ?% of 299.69
• 32.052- 22.03 x 24.199 - 15.18 x 11.04 = ?
• 24.75% of 20.125% of 30.05% of 2196.06 = ? 
• 44.87% of (39.85 × ?) – 1520.88 0.51 = 1400.8
• ? = 19.89% of (29.89 × 12.44) + 9.96 × 12.022
• ? = 41.92% of (34.92 x 40.42) + 29.78% of 399.84
• (168.24 ÷ 23.98) x 19.81 + ? = 176.33
• ? = 49.83% of 39.72% of (45.011.99 – 4.98 2.04)
• ?2 - 12.5% of 647.99 = 24.98% × 363.97 + 5% of 1059.98 
• 33.33% of 110.99 = 19.98% × 244.97 - √?
• 49.99% of 539.99 + 263.98% of 49.99 = ?% of 1608.01
• (400.01% of 149.89) ÷ 49.97 = ?2 ÷ (95.98 ÷ 31.99) 
• 39.99% of 159.98 = ?2 – 319.99% of 12.5 – 49.98% of 129.99