（1）把上表补充完整（2）每人每天刷牙两次，洗脸三次，照这样计算：①用容器盛水比连续放水每人每天一共可以节约水多少升？②小明一家三口一个月（按30天计算）可以节约水多少升？
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×1= 52﹣42= 0.75﹣0.5=×=÷= 125×0.08= 0.5+0.02=÷=÷= 0.15×6= 12÷0.3= 0÷=
直接写得数．×16= 12÷= 24×=×÷= 1÷=÷15=÷=×÷×=
直接写得数． 10÷=÷=×= 55×÷=×2= 1÷=÷= 0×+=
口算我最棒= 26×======= 6.4÷20%= 125%×8=
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×1= 52﹣42= 0.75﹣0.5=
=
÷
= 125×0.08=
÷
= 0.15×6= 12÷0.3= 0÷
=
×16= 12÷
= 24×
=
×
÷
=
÷15=
÷
=
×
÷
×
=
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÷
=
= 55×
÷
=
×2= 1÷
=
÷
= 0×
+
=
= 26×
=
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= 6.4÷20%= 125%×8=
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