口算．42+129= 45×0.8= 6.6﹣5= 3.14×100== = 43= 1÷0.5=
直接写得数．= 100÷0.01== 1.01×0.8= 1.25×0.3×8====
直接写得数 576﹣（4.32+1.3）÷0.125÷1 0.25×1÷3× 40﹣10÷3 1﹣+ 2.7÷+÷ 1999×（1﹣﹣﹣0.625）
直接写得数 1.6×12.5=== 3.9×10%====== 25÷25%=
口算． 2.2+3.57= 1.4﹣0.6= 3.25×4= 15×= 44÷== 2﹣=÷2===．
直接写出得数 6+0.25=×=÷=4÷7= 2.6﹣1= 8×= 3﹣1.05= 3.25×4= 63+84= 3.14×52= 25××4= 1++3=
= 
= 43= 1÷0.5=
= 100÷0.01=
= 1.01×0.8=
=
=
=
÷0.125
÷1
0.25×1
÷3×
+
+
﹣0.625）
=
= 3.9×10%=
=
=
=
=
= 25÷25%=
= 44÷
=
= 2﹣
=
÷2=
=
=．
+0.25=
×
=
÷
=4
÷7=
= 8×
= 3﹣1.05= 3.25×4=
+
+3
=
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