小小神算手.
72÷8= 48÷6= 63÷7= 34÷8=
81÷9= 240÷4= 270÷3= 350÷5=
540÷6= 180÷3= 1600÷8= 4200÷7=
4500÷9= 4800÷8= 6300÷7=
神机妙算细又巧
24×(
+
+
)9.56﹣4.875+12.5%+1.44
×0.86+14%÷7
×9+
.
递等式计算,能简便的要简便.
46.7×0.18+46.7×0.82
÷75%﹣
32×25×12556+144×
直接写得数.
36+79=15÷1%=9.1﹣1.9=7.2÷0.6=
+
=
=
﹣
=
=1+30%=0.25×8=
0.52=6π=(
+
)×12=
=99×0.8+0.8=
脱式计算.(能简算的要简算)
(1.6×
+3.6÷
)×
3.14×
+2.625×3.14
[
﹣(0.5+
×50%)]÷
1.8×25%+0.25×2.2.
200﹣199+198﹣197+196﹣195+…+4﹣3+2﹣1=
×
+
×
+
×
+…+
×
=
1.8+62= 44÷
=2.4×5=1÷
+
÷1=
=3.4﹣1
=2﹣1
=
+
+
+…+
=
8.8×(
+
+
)= 0.75×16+
= 98÷
=30
﹣(18.8+12×
)=