一个长方体机油桶，长8分米，宽2分米，高6分米．如果每升机油重0.72千克，可装机油多少千克？
390×0.02=﹣= 5﹣1.4﹣1.6= 0.9﹣0.26= 81÷= 4×（0.6+1.9）= 0.23×400=×=﹣+= 0.9+99×0.9=
口算． 1.4×3=== 1.8+0.32== 36.1÷5.9≈ 298×31≈ 499+203≈
直接写出下面各题的结果． 28×2= 1.8+2.9= 4.8÷12= 10﹣0.9= 0.25×4=﹣=+=×= 1﹣75%=÷=
直接写得数 3.3+6.07= 5×5%= 8÷1.6= 567﹣99= 3÷27= 3﹣﹣= 5×÷5×=（+）×12=
口算下面各题： 10﹣0.4= 1÷9= 8.4÷2.1= 0.1×20%= 1.7×0.4=+=×6=÷=÷=×=
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= 5﹣1.4﹣1.6= 0.9﹣0.26=
= 4×（0.6+1.9）= 0.23×400=
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= 0.9+99×0.9=
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= 1.8+0.32=
= 36.1÷5.9≈ 298×31≈ 499+203≈
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