四乘以括号九点三减五点七括号加三点六简便算法
4×(9.3-5.7)+3.6
=4×3.6+1×3.6
=(4+1) ×2×3.6÷2
=10×3.6÷2
=36÷2
=18
括号160加190括号乘括号49除以7括号用递等式简算
(160+190)×(49÷7)
=350×7
=2450
希望能帮助你
望采纳,谢谢
括号68+49括号乘以75简便
括号68+49括号乘以75简便
(64+49)×75
=113×75
=8475.
4×(9.3-5.7)+3.6
=4×3.6+1×3.6
=(4+1) ×2×3.6÷2
=10×3.6÷2
=36÷2
=18
(160+190)×(49÷7)
=350×7
=2450
希望能帮助你
望采纳,谢谢
括号68+49括号乘以75简便
(64+49)×75
=113×75
=8475.