甲现在的年龄是乙过去某一时刻年龄的2倍，那时甲正好是乙现在这样大，当乙到了甲现在的年龄时，甲与乙年龄之和为63，那么现在甲、乙年龄分别是多少岁？
直接写出得数．×=÷=÷= 1.8÷= 0.2÷3=÷=×=××0=×÷×= 18÷÷=
你能直接写出下列各题的结果吗？试试看×=÷=××= 4.5%=×12=÷4= （+）×== %
计算．×÷÷××÷6×÷7÷．
直接写得数．= 24÷======
直接写出得数． 12×=÷= 0÷=﹣= 12×（×）=×=÷= 20÷=+=×90×=
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