31 40 51 64 79 ?
31 + 9 = 40 40 + 11 = 51 51 + 13 = 64 64 + 15 = 79 79 + 17 = 96
75% of 65% of 7/5 of 2420 = ?
`(21 xx 51 + 54)/(9 xx 14 - 30 )` =?
√324 + √576 = ?/ √9
236.23-653.23+696.23=?
(7/5) × (3/4) × (5/9) × (6/7) × 3112 = ?
[(120)2 ÷24 ×25] ÷ 250 =?
22% of 560 + 34% of 2160 × 5/12 =? + 16% of 920
(47.5 ÷ 9.5) × (78.5 ÷ 15.7) + 475 = ? + 15% of 150
1780 – 60 ÷ 4 x 80 = ?
242 + 80% of 1620 = ? × 16 – 35% of 800
