班级购买活页簿与日记本合计32本，共花钱74元。活页簿每本1.9元，日记本每本3.1元。请问：买活页簿、日记本各几本？
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（1）= （2）46×101= （3）= （4）0.2÷10%= （5）915﹣519= （6）= （7）= （8）42÷0.25=
计算，能简算则简算.++ 1﹣﹣++﹣（﹣）++﹣+﹣．
直接写出得数． 3﹣=﹣÷+= 49×9+49= 3.72+22.8=×=÷= 36×=﹣= 0.125×1.6×0.8=
== 0.25×99+0.25======= 8×3.2+8×6.8=
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= 0.125×1.6×0.8=
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= 0.25×99+0.25=
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= 8×3.2+8×6.8=
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