直接写得数
2.6+7.4= 36+99= 0.008×1000= 70÷0.01=
110﹣87= 2.5÷1/4= 7/12×9/14= 4/5×0.25+3=
直接写得数
2.5÷
=
×
=
×0.25+3=
×
=
2.8×0.5= 6+7.4= 80÷0.01=
+
+
=
直接写出得数
0.9×99+0.9= 100÷25×8= 9×
= 8÷
=
1﹣66.9%=
= 0÷
=
=
14×102= 7.2÷9=
直接写出得数．
8÷0.125= 1.01﹣0.91= 1.9×0.5×4= 0.37+
= 1
+
=
3.2×
= 8﹣
= 75×99= 81÷
= 2.5×6.7×4=
口算：
199+99= 70﹣25= 120÷12= 25×5=
4.6+0.04= 2.5﹣1.5= 6.3÷2.5= 5×0.8=
+
=
﹣
=
×
=
÷
=
，⑴求
的值；⑵若
则x的值为多少？