2 分数乘法
直接写出得数.
×
=
+
=
3÷
﹣
÷3=
﹣
÷5=
(
﹣
)×30= 9.1÷0.07=
×
×2= 1.01×23=
275﹣(167+275)=
×4÷4×
=
脱式计算(能简算的要简算).
×59 1
﹣(
+
) 0.125×0.25×8×4
87.7×11﹣87.7 4÷1.25÷0.8 8.05﹣0.75﹣
.
口算
134﹣18= 1.01﹣0.98=
×
= 1.5×4=
7.45+8.55=
+
×8= 2÷0.25+1.1=
×6÷
×6=
5.76﹣(2.76+0.8)= 108×
﹣10= 0.125×17×8= 0.43=
直接写出得数.
2306+400= 101﹣52=
×
= ( 0.25)2=
7.4﹣4=
×30%= 6÷17= 0.3+5=
1÷
= 41.64÷6.9≈ 0.24÷0.8=
+
÷2=.





×
=
=
= 9.08×9+9.08=
=
=
÷3= 32=
﹣0.3= 2.1+3.25=
×1.8= (0.2)2×52=
+
=
﹣
= 2012×
=
×[0.75+(
﹣
)]= 40÷[
+
)]=
×6= 253﹣99= 4.5×100= 4×
+
= 20÷
= 10.57﹣(6.57+2)=
”你还能想到什么?(至少写出3条)
= 5÷1%=
+20%= 30%×40%= 13÷19+18×
.
+
= 2﹣
= 1﹣
+
=
×
=1.
+3.8+3.8+3.8+3.8 ③5×
④(
﹣
)÷
+22÷51.
+
=
×12= 1÷5%= 4π≈
= 3.14×8= 5.3+0.07= 8﹣
=
×
= 1÷0.25=
=
﹣
= 16×
= 0.25×
÷0.125=
﹣
= 9.99+99= 0.1×0.1=
×
÷
×
×
+1.25×3
88×
. 6×99+6.6.
= 45×
= 4﹣1
= 0.77+0.3=
=
= (0.18+0.9)÷9=
+
= 0.77+0.33=
×4+4×
=
:
=
×
= a﹣
a×
×
=
×
×
=
)×4=
= 7.2÷0.4=
÷6×
= 45×
= 4﹣1
= 0.77+0.3=
=
=
×
÷
×
×5.6=
= 28×30=
×25=
+8.4=
的
是多少?
= 3.4×25×4=
=
=
=
=
+
=
=
=
=
+
)×46
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