21   11   12   19.5   41    ?    318
21 x 0.5 + 0.5 = 11Â 11 x 1 + 1 = 12Â 12 x 1.5 + 1.5 = 19.5 19.5 x 2 + 2 = 41 41 x 2.5 + 2.5 = 105 Â 105 x 3 + 3 = 318
[123 ÷ 8 ÷ 9] × 144 = ? + 12 × 5
(11/12) × (18/22) × (4/3) + 3 = ?2
800 + 900 X (3)-2 - ? = 25 X 60 ÷ 2Â
25% of 30% of 3/5 of 14500 =?
(26)2 = {(20% of 40% of 18200) ÷ ?} × 1664 ÷ 128Â
15% of 360 × 20% of ? = 324
(8 x 9) ÷ 5 + ?2 = 23.4
(512) (2/3) × √64 ÷ (512) (1/3) = (64) (?/2) ÷ (2)6Â
(42% of 1500 + 170) ÷ 4 = ?2 - 52Â
25% of 60 × 15% of 120 = 30% of (?)
