5.脱式计算
3个回答
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(4-7/2x2/3)÷10/9
=(4-7/3)x9/10
=5/3x9/10
=3/2
3.68×[1÷(2.1-2.09)]
=3.68x(1÷0.01)
=3.68x100
=368
1.75×2/5+3又4/5
=1.75×0.4+3.8
=0.7+3.8
=4.5
1.5x4/21+1又1/7÷1又3/5
=3/2x4/21+8/7x5/8
=2/7+5/7
=1
8.8÷【7.8+1/4×(11/4+1又1/4)】
=8.8÷[7.8+1/4×(11/4+5/4)]
=8.8÷(7.8+1/4×16/4)
=8.8÷(7.8+1)
=8.8÷8.8
=1
=(4-7/3)x9/10
=5/3x9/10
=3/2
3.68×[1÷(2.1-2.09)]
=3.68x(1÷0.01)
=3.68x100
=368
1.75×2/5+3又4/5
=1.75×0.4+3.8
=0.7+3.8
=4.5
1.5x4/21+1又1/7÷1又3/5
=3/2x4/21+8/7x5/8
=2/7+5/7
=1
8.8÷【7.8+1/4×(11/4+1又1/4)】
=8.8÷[7.8+1/4×(11/4+5/4)]
=8.8÷(7.8+1/4×16/4)
=8.8÷(7.8+1)
=8.8÷8.8
=1
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我会做
追答
做完采纳我吗
是第5题还是五个都做
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