21 x 1 + 2 = 23 23 x 2 + 3 = 49 49 x 3 + 5 = 152 152 x 4 + 7 = 615 615 x 5 + 11 = 3086
72.5% of 400 – 23.25% of 1020 = 105% of ?
(15 × 225) ÷ (45 × 5) + 480 = ? + 25% of 1240
1404 ÷ 26 x 3 + 7 = ?2
32% of 4080 + 24% of 455 = x% of 4000
?% of 320 - 69 = 123
√? = 80% of 720 - 22% of 2500
(√ 196 x √ 36 x √ 100) = ?% of 200
The value of 97 × 103 is _________.
?2 = (1035 ÷ 23) × (1080 ÷ 24)
(42% of 1500 + 170) ÷ 4 = ?2 - 52
