直接写得数．
0.4+0.5= 1﹣0.98= 0.578×0= 7.2﹣5.2=
0.3+1.7= 8.6﹣0.6= 3+0.45= 6×0.8=
0.65×0.1= 4.2×0.5= 1.9﹣0.5= 3.5÷5=
0.66﹣0.6= 1.3×100= 3.54+0.06= 0.25×0.38×4=
直接写得数．
0.4+0.5= 1﹣0.98= 0.578×0= 7.2﹣5.2=
0.3+1.7= 8.6﹣0.6= 3+0.45= 6×0.8=
0.65×0.1= 4.2×0.5= 1.9﹣0.5= 3.5÷5=
0.66﹣0.6= 1.3×100= 3.54+0.06= 0.25×0.38×4=
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千克放入乙袋中．两袋的重量刚好相等．原来甲袋比乙袋重多少千克？
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