用简便方法计算:(1)43×43+43×57(2)350÷14(3)72×104—4×72

2025-04-17 04:06:52
推荐回答(3个)
回答1:


回答2:

(1)43×43+43×57
=43x(43+57)
=43x100
=4300
(2)350÷14
=350÷(7x2)
=350÷7÷2
=50÷2
=25

(3)72×104—4×72
=72x(104-4)
=72x100
=7200

回答3:

(1)43×43+43×57
=43x(43+57)
=43x100
=4300
(2)350÷14
=350÷(7x2)
=350÷7÷2
=50÷2
=25
(3)72×104—4×72
=72x(104-4)
=72x100
=7200