10 + 10 = ?, 20, 18, 21, 22, 12 + 15 = ?, 25, 28, 27, 26, 18 + 22 = ?, 38, 40, 39, 41, 25 + 14 = ?, 38, 37, 40, 39, 31 + 16 = ?, 45, 46, 47, 48, 20 + 29 = ?, 47, 49, 48, 50, 33 + 17 = ?, 48, 51, 49, 50, 11 + 28 = ?, 39, 37, 40, 38, 19 + 21 = ?, 39, 40, 41, 38, 14 + 24 = ?, 39, 36, 38, 37, 35 - 12 = ?, 23, 22, 21, 24, 40 - 18 = ?, 23, 24, 21, 22, 50 - 27 = ?, 22, 25, 23, 24, 46 - 19 = ?, 28, 25, 26, 27, 39 - 15 = ?, 24, 26, 23, 25, 28 - 11 = ?, 18, 17, 19, 16, 44 - 20 = ?, 25, 22, 23, 24, 32 - 14 = ?, 17, 19, 18, 20, 41 - 16 = ?, 25, 24, 26, 23, 37 - 22 = ?, 16, 15, 14, 13, 2 × 5 = ?, 15, 8, 12, 10, 3 × 4 = ?, 12, 16, 14, 10, 6 × 3 = ?, 16, 18, 15, 20, 7 × 4 = ?, 24, 26, 28, 32, 5 × 6 = ?, 32, 28, 25, 30, 8 × 4 = ?, 32, 34, 36, 28, 9 × 3 = ?, 24, 27, 30, 21, 10 × 4 = ?, 36, 42, 40, 44, 6 × 7 = ?, 48, 44, 42, 40, 5 × 9 = ?, 35, 45, 50, 40, 12 ÷ 3 = ?, 5, 6, 3, 4, 20 ÷ 4 = ?, 5, 6, 4, 8, 18 ÷ 6 = ?, 4, 2, 6, 3, 24 ÷ 8 = ?, 6, 3, 2, 4, 30 ÷ 5 = ?, 5, 8, 6, 4, 28 ÷ 7 = ?, 4, 3, 7, 5, 45 ÷ 9 = ?, 9, 5, 4, 6, 40 ÷ 8 = ?, 8, 4, 6, 5, 36 ÷ 6 = ?, 7, 8, 6, 5, 48 ÷ 6 = ?, 8, 9, 6, 7, 16 + 23 = ?, 39, 40, 37, 38, 27 + 13 = ?, 38, 40, 39, 41, 22 + 19 = ?, 40, 39, 42, 41, 49 - 17 = ?, 33, 31, 32, 30, 38 - 13 = ?, 26, 24, 23, 25, 42 - 29 = ?, 13, 15, 14, 12, 4 × 9 = ?, 40, 34, 36, 32, 7 × 5 = ?, 30, 35, 25, 40, 9 × 4 = ?, 40, 32, 34, 36, 50 ÷ 10 = ?, 5, 10, 4, 6, 42 ÷ 7 = ?, 5, 6, 7, 8, 32 ÷ 4 = ?, 6, 7, 8, 9

4 Operations (10–50)

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