| ①1.1-0.1×10= | ②2.2+3.57= | ③5.38-(1.8+2.38)= | ④5.04÷0.9= |
| ⑤0.9-0.26= | ⑥50%×(2.6-2.4)= | ⑦0.05÷ ×0= | ⑧80%× ×1.25= |
| ①1.1-0.1×10=0.1, | ②2.2+3.57=5.77, | ③5.38-(1.8+2.38)=1.2, | ④5.04÷0.9=5.6, |
| ⑤0.9-0.26=0.64, | ⑥50%×(2.6-2.4)=0.1, | ⑦0.05÷ ×0=0, | ⑧80%× ×1.25=0.75. |
分析:根据小数和分数加减乘除的计算方法进行计算即可.
点评:口算时,注意运算符号和数据,然后再进一步计算即可.
×0=
×1.25=