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The most abundant metal in the earth crust is aluminium. Although aluminum is the most abundant metal in the earth's crust, it is never found free in nature. All of the earth's aluminum has combined with other elements to form compounds.
(1520 - 1350) ÷ (550 – 500) = ?
350% of (450 / 1.5) = ?% of 4200
115% of 40 + 3 × 4 = ? × 11 – 8
187 ÷ 5 ÷ 0.4 = ? – 24 × 2.4
{(3/8) + (5/6)} × 120 – 53 = ?
19 × ? = 361 ÷ 19
56 ÷ 14 × 4 – 316 + ? 2 = 100
65% of ? = 50 + 20 × 4
(√529 + 63 /8)% of 800 = ?% of 250
?% of 140 + 16% of 250 = 62 × 12
