8+88+888+8888+88888=______.
8+88+888+8888+88888=______.
125×(4+8)=______×______+______×______.
根据1.2×4=0.6×8,可以写成比例______:______=______:______.
填质数:21=______+______=______×______=______-______.
56÷7=8中,______是______的倍数,______是______的因数.
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=______×______.
计算:888×999=______.
在8×5=40中,40是______和______的倍数,8和______是______的因数.
0.125=5:______=______%=______÷______.