1992×19941994-1994×19931993=______.
1992×19941994-1994×19931993=______.
125×(4+8)=______×______+______×______.
填质数:21=______+______=______×______=______-______.
3.76°=______度 ______分 ______秒.
填上适当的质数.24=______+______=______+______=______+______.
巧填单位名称.1______-59______=1______;1______-9______=1______;1___
0.87×99+0.87=______×______.
0.125=5:______=______%=______÷______.
根据1.2×4=0.6×8,可以写成比例______:______=______:______.
0.4:1.2=0.6:1.8可改写成______×______=______×______.
______升______毫升=4050毫升 6.25小时=______时______分.
从36的约数中选出4个数组成比例:______:______=______:______.