2.91+6.1-0.56-0.44等于多少?
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解:2.91+6.1-0.56-0.44等于( 8.01 )
∵已知需求出2.91+6.1-0.56-0.44等于多少
∴2.91 + 6.1 - 0.56 - 0.44
= 2.91 + 6.1 - (0.56 + 0.44)
= (2×100+91)/100 + (6×10+1)/10 - (56/100+ 44/100)
= 291/100 + 61/10 - 100/100
= 291/100 + 610/100 - 100/100
= 801/100
= 8.01
答:2.91+6.1-0.56-0.44等于8.01
∵已知需求出2.91+6.1-0.56-0.44等于多少
∴2.91 + 6.1 - 0.56 - 0.44
= 2.91 + 6.1 - (0.56 + 0.44)
= (2×100+91)/100 + (6×10+1)/10 - (56/100+ 44/100)
= 291/100 + 61/10 - 100/100
= 291/100 + 610/100 - 100/100
= 801/100
= 8.01
答:2.91+6.1-0.56-0.44等于8.01
展开全部
2.91+6.1-0.56-0.44
=2.91+6.1-(0.56+0.44)
=2.91+6.1-1
=2.91+(6.1-1)
=2.91+5.1
=8.01
=2.91+6.1-(0.56+0.44)
=2.91+6.1-1
=2.91+(6.1-1)
=2.91+5.1
=8.01
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2.91+6.1-0.56-0.44
=(2.91+6.1)-(0.56+0.44)
=9.01-0.1
=8.91
=(2.91+6.1)-(0.56+0.44)
=9.01-0.1
=8.91
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2.91+6.1-0.56-0.44=2.91+6.1-(0.56+0.44)=2.91+6.1-1=8.01
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