小学三年级下册-混合计算题

33 + 72 ÷ 9(48 + 4) × 371 - 20 ÷ 4(77 + 3)× 5(74 - 4) × 7(56 + 10) ÷ 24 × (39 + 3) 80 - 4 × 34 ×(7 +

(48 +4) ×3 71 -20 ÷4 33 +72 ÷9 (77 +3)× 5 (56 +10) ÷2 4× (39 +3) (74 -4) ×7 80 -4 ×3 44 +63 ÷9 85 -72 ÷9 4×(7 +36) (132 -48) ×25 (25 +40) ÷8 (243 –3) ×52 (305 +35) ÷5 54 ×(46 +61)