脱式计算,能简算要简算33.5-5.3-4.7+16.5 9900÷25÷4 &n...
脱式计算,能简算要简算33.5-5.3-4.7+16.59900÷25÷41÷(35+310)24×(23+16-38)1+0.45÷0.9-782017-(317+23...
脱式计算,能简算要简算33.5-5.3-4.7+16.5 9900÷25÷4 1÷( 3 5 + 3 10 ) 24×( 2 3 + 1 6 - 3 8 ) 1+0.45÷0.9- 7 8 20 17 -( 3 17 + 2 3 )
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(1)33.5-5.3-4.7+16.5, =(33.5+16.5)-(5.3+4.7), =50-10, =40; (2)9900÷25÷4, =9900÷(25×4), =9900÷100, =99; (3)1÷(
=1÷
=
(4)24×(
=24×
=16+4-9, =20-9, =11; (5)1+0.45÷0.9-
=1+0.5-
=1.5-
=0.625; (6)
=
=1-
=
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