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226 x 15 - 11 x 99 + (41)2 = ?
52% of 400 + √(?) = 60% of 600 - 25% of 400
(23 × 8) – (13 × 5) + 67 =? x 6
18 + 28÷ 4 - 14 = ? - 35
...390/? = √256 + 3.5
(165 × 12) ÷ 45 + 110 = ? × 2
3.2% of 500 × 2.4% of ? = 288
{(123 + ? × 28) – 1254} × (2328 ÷ 97 – 13) = 8195
