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计算下面各题,怎样简便就怎样计算。
$13.26 + 4.5×0.4÷0.18$ $(3.04 - 2.95)÷(1.5 - 1.2)$
$37.5 - 1.68 - 5.32$ $18.9 + 17.6×4 - 35.8$
$1.25×19×0.8$ $3.29×2.7 - 0.29×2.7$
$3.58×99 + 3.58$ $[0.22 + (1 - 0.8)]×0.84$
$4.3×2.4÷0.03$ $21.47÷1.9 + 5.96 - 3.78$
$8.8×0.125$ $3.17×0.63 + 0.037×31.7$
$1.7×99.9$ $5.6×1.2 - 0.574÷1.4$
$18.7 - (9.05 - 5.3)$ $[8.95 - (0.65 + 0.8)]÷2.5$
$8.7÷0.8÷1.25$ $1.25×[0.6÷(2.35 + 0.15)]$
$32×(1 - 0.62) + 3.6$ $3.5×11 + 3.5×5 - 6×3.5$
$13.26 + 4.5×0.4÷0.18$ $(3.04 - 2.95)÷(1.5 - 1.2)$
$37.5 - 1.68 - 5.32$ $18.9 + 17.6×4 - 35.8$
$1.25×19×0.8$ $3.29×2.7 - 0.29×2.7$
$3.58×99 + 3.58$ $[0.22 + (1 - 0.8)]×0.84$
$4.3×2.4÷0.03$ $21.47÷1.9 + 5.96 - 3.78$
$8.8×0.125$ $3.17×0.63 + 0.037×31.7$
$1.7×99.9$ $5.6×1.2 - 0.574÷1.4$
$18.7 - (9.05 - 5.3)$ $[8.95 - (0.65 + 0.8)]÷2.5$
$8.7÷0.8÷1.25$ $1.25×[0.6÷(2.35 + 0.15)]$
$32×(1 - 0.62) + 3.6$ $3.5×11 + 3.5×5 - 6×3.5$
答案
1.23.26 2.0.3 3.0.5 4.53.5 5.19 6.8.1 7.358 8.0.3528 9.344 10.13.48 11.1.1 12.3.17
解析
1. $13.26 + 4.5×0.4÷0.18$
$\begin{aligned}&=13.26 + 1.8÷0.18\\&=13.26 + 10\\&=23.26\end{aligned}$
2. $(3.04 - 2.95)÷(1.5 - 1.2)$
$\begin{aligned}&=0.09÷0.3\\&=0.3\end{aligned}$
3. $37.5 - 1.68 - 5.32$
$\begin{aligned}&=37.5 - (1.68 + 5.32)\\&=37.5 - 7\\&=30.5\end{aligned}$
4. $18.9 + 17.6×4 - 35.8$
$\begin{aligned}&=18.9 + 70.4 - 35.8\\&=89.3 - 35.8\\&=53.5\end{aligned}$
5. $1.25×19×0.8$
$\begin{aligned}&=1.25×0.8×19\\&=1×19\\&=19\end{aligned}$
6. $3.29×2.7 - 0.29×2.7$
$\begin{aligned}&=(3.29 - 0.29)×2.7\\&=3×2.7\\&=8.1\end{aligned}$
7. $3.58×99 + 3.58$
$\begin{aligned}&=3.58×(99 + 1)\\&=3.58×100\\&=358\end{aligned}$
8. $[0.22 + (1 - 0.8)]×0.84$
$\begin{aligned}&=[0.22 + 0.2]×0.84\\&=0.42×0.84\\&=0.3528\end{aligned}$
9. $4.3×2.4÷0.03$
$\begin{aligned}&=10.32÷0.03\\&=344\end{aligned}$
10. $21.47÷1.9 + 5.96 - 3.78$
$\begin{aligned}&=11.3 + 5.96 - 3.78\\&=17.26 - 3.78\\&=13.48\end{aligned}$
11. $8.8×0.125$
$\begin{aligned}&=(8 + 0.8)×0.125\\&=8×0.125 + 0.8×0.125\\&=1 + 0.1\\&=1.1\end{aligned}$
12. $3.17×0.63 + 0.037×31.7$
$\begin{aligned}&=3.17×0.63 + 3.17×0.37\\&=3.17×(0.63 + 0.37)\\&=3.17×1\\&=3.17\end{aligned}$
13. $1.7×99.9$
$\begin{aligned}&=1.7×(100 - 0.1)\\&=1.7×100 - 1.7×0.1\\&=170 - 0.17\\&=169.83\end{aligned}$
14. $5.6×1.2 - 0.574÷1.4$
$\begin{aligned}&=6.72 - 0.41\\&=6.31\end{aligned}$
15. $18.7 - (9.05 - 5.3)$
$\begin{aligned}&=18.7 - 3.75\\&=14.95\end{aligned}$
16. $[8.95 - (0.65 + 0.8)]÷2.5$
$\begin{aligned}&=[8.95 - 1.45]÷2.5\\&=7.5÷2.5\\&=3\end{aligned}$
17. $8.7÷0.8÷1.25$
$\begin{aligned}&=8.7÷(0.8×1.25)\\&=8.7÷1\\&=8.7\end{aligned}$
18. $1.25×[0.6÷(2.35 + 0.15)]$
$\begin{aligned}&=1.25×[0.6÷2.5]\\&=1.25×0.24\\&=0.3\end{aligned}$
19. $32×(1 - 0.62) + 3.6$
$\begin{aligned}&=32×0.38 + 3.6\\&=12.16 + 3.6\\&=15.76\end{aligned}$
20. $3.5×11 + 3.5×5 - 6×3.5$
$\begin{aligned}&=3.5×(11 + 5 - 6)\\&=3.5×10\\&=35\end{aligned}$
$\begin{aligned}&=13.26 + 1.8÷0.18\\&=13.26 + 10\\&=23.26\end{aligned}$
2. $(3.04 - 2.95)÷(1.5 - 1.2)$
$\begin{aligned}&=0.09÷0.3\\&=0.3\end{aligned}$
3. $37.5 - 1.68 - 5.32$
$\begin{aligned}&=37.5 - (1.68 + 5.32)\\&=37.5 - 7\\&=30.5\end{aligned}$
4. $18.9 + 17.6×4 - 35.8$
$\begin{aligned}&=18.9 + 70.4 - 35.8\\&=89.3 - 35.8\\&=53.5\end{aligned}$
5. $1.25×19×0.8$
$\begin{aligned}&=1.25×0.8×19\\&=1×19\\&=19\end{aligned}$
6. $3.29×2.7 - 0.29×2.7$
$\begin{aligned}&=(3.29 - 0.29)×2.7\\&=3×2.7\\&=8.1\end{aligned}$
7. $3.58×99 + 3.58$
$\begin{aligned}&=3.58×(99 + 1)\\&=3.58×100\\&=358\end{aligned}$
8. $[0.22 + (1 - 0.8)]×0.84$
$\begin{aligned}&=[0.22 + 0.2]×0.84\\&=0.42×0.84\\&=0.3528\end{aligned}$
9. $4.3×2.4÷0.03$
$\begin{aligned}&=10.32÷0.03\\&=344\end{aligned}$
10. $21.47÷1.9 + 5.96 - 3.78$
$\begin{aligned}&=11.3 + 5.96 - 3.78\\&=17.26 - 3.78\\&=13.48\end{aligned}$
11. $8.8×0.125$
$\begin{aligned}&=(8 + 0.8)×0.125\\&=8×0.125 + 0.8×0.125\\&=1 + 0.1\\&=1.1\end{aligned}$
12. $3.17×0.63 + 0.037×31.7$
$\begin{aligned}&=3.17×0.63 + 3.17×0.37\\&=3.17×(0.63 + 0.37)\\&=3.17×1\\&=3.17\end{aligned}$
13. $1.7×99.9$
$\begin{aligned}&=1.7×(100 - 0.1)\\&=1.7×100 - 1.7×0.1\\&=170 - 0.17\\&=169.83\end{aligned}$
14. $5.6×1.2 - 0.574÷1.4$
$\begin{aligned}&=6.72 - 0.41\\&=6.31\end{aligned}$
15. $18.7 - (9.05 - 5.3)$
$\begin{aligned}&=18.7 - 3.75\\&=14.95\end{aligned}$
16. $[8.95 - (0.65 + 0.8)]÷2.5$
$\begin{aligned}&=[8.95 - 1.45]÷2.5\\&=7.5÷2.5\\&=3\end{aligned}$
17. $8.7÷0.8÷1.25$
$\begin{aligned}&=8.7÷(0.8×1.25)\\&=8.7÷1\\&=8.7\end{aligned}$
18. $1.25×[0.6÷(2.35 + 0.15)]$
$\begin{aligned}&=1.25×[0.6÷2.5]\\&=1.25×0.24\\&=0.3\end{aligned}$
19. $32×(1 - 0.62) + 3.6$
$\begin{aligned}&=32×0.38 + 3.6\\&=12.16 + 3.6\\&=15.76\end{aligned}$
20. $3.5×11 + 3.5×5 - 6×3.5$
$\begin{aligned}&=3.5×(11 + 5 - 6)\\&=3.5×10\\&=35\end{aligned}$
