①27.3÷0.91=
②42÷0.05=
③35÷74=(商用循环小数表示)
④5.26÷1.6=
1.5小时90分钟 12
20-0.2 2.4×5 8.4÷0.7 2.35+6.65
3.07×100 10-0.07 1.01+0.7 1÷0.25
99×99=9801
999×999=998001
9999×9999=
99999×99999=
(100-12)÷8=11
(1000-112)÷8=111
(100000-11112)÷8=
(10000000-1111112)÷8=
+ = 1- = 1.25× = - =
0.9+99×0.9= 0÷ = 1÷ = -0.5=
0.6×101= 3.2×2.5×12.5=