甲、乙两包糖的重量比是4：1，如果从甲包取出10克放入乙包后，甲、乙两包糖的重量比变为7：8，那么两包糖的总重量是多少克？
直接写得数．×=﹣=×=×=÷=÷=÷=÷=
直接写得数÷=×=﹣=×1.4= 12×= 24×=+= 0÷=
直接写得数== 3÷========
直接写得数．×16= 12÷= 0.3×=×÷=÷= 0×+=×÷×=
口算． 2×= 1.5÷=×0.8=×9= 1.2÷=÷2=÷= 2.4÷= 1÷5=÷3=
×
﹣
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×
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×
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÷
=
÷
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÷
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÷
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÷
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×
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﹣
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×1.4=
= 24×
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+
= 0÷
=
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= 3÷
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=
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=
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=
×16= 12÷
= 0.3×
=
×
÷
÷
= 0×
+
=
×
÷
×
= 1.5÷
=
×0.8=
×9= 1.2÷
=
÷2=
÷
= 2.4÷
= 1÷5
=
÷3=
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