口算
5×0.9= 0.42÷7= 0.4÷8= 3.9×0=
86÷0.1= 30×0.05= 20+12.3= 54÷0.9=
6.3÷0.7= 9.54+0.46= 10﹣0.1= 1.5﹣0.01=
0.8×6= 3.8×0.5= 45÷0.45= 1.3+0.7=+
=
+
= 1﹣
=
﹣
=
看谁算得快.×
=
÷
=
×8=
+
=
18×2%= 1﹣= 3.5÷18= 137﹣63﹣37=
205﹣199+95= 8.8+1.2= 8π≈ 0.33=
直接写结果÷8=
÷
= 1÷
=(
+
)×12=
×
×0= 2÷
=
×3=
×
×19=
直接写出得数.
()2= 4﹣4×
= 4×(
+
)=
÷2÷
= 0.77+0.33=
直接写出得数:
4800÷240= ; 25×12= ; 16.5÷10%= ;+
= ; 1﹣
+
= ; 1.02﹣0.43= ;
14÷= ; 0.32= ;
×
= ;
×2÷
×2= .
直接写出得数.
4÷1= 1÷1%=(
﹣
)×8=
×1000=
×1×
= 0.9﹣0.35=
2÷×
÷2= 3÷(1÷8)=
×
=