一、用竖式计算。
75.6÷42=
3.9×18=
0.78÷4=
96.15÷15=
0.46×63=
1.44÷18=
34.2×30=
372.6÷18=
0.206×25=
75.6÷42=
3.9×18=
0.78÷4=
96.15÷15=
0.46×63=
1.44÷18=
34.2×30=
372.6÷18=
0.206×25=
答案
1. 75.6÷42=1.8
2. 3.9×18=70.2
3. 0.78÷4=0.195
4. 96.15÷15=6.41
5. 0.46×63=28.98
6. 1.44÷18=0.08
7. 34.2×30=1026
8. 372.6÷18=20.7
9. 0.206×25=5.15
2. 3.9×18=70.2
3. 0.78÷4=0.195
4. 96.15÷15=6.41
5. 0.46×63=28.98
6. 1.44÷18=0.08
7. 34.2×30=1026
8. 372.6÷18=20.7
9. 0.206×25=5.15
二、计算下面各题,怎样简便就怎样计算。
$25.12 - 4.75 - 16.4$
$56.83 - 4.08 ÷ 24$
$2.39 + (5.43 + 7.6)$
$4.32 + 16.5 × 4$
$(8 + 0.8) × 125$
$(10.892 - 5.6) ÷ 28$
$25.12 - 4.75 - 16.4$
$56.83 - 4.08 ÷ 24$
$2.39 + (5.43 + 7.6)$
$4.32 + 16.5 × 4$
$(8 + 0.8) × 125$
$(10.892 - 5.6) ÷ 28$
答案
1. $25.12 - 4.75 - 16.4=3.97$
2. $56.83 - 4.08 ÷ 24=56.66$
3. $2.39 + (5.43 + 7.6)=15.42$
4. $4.32 + 16.5 × 4=70.32$
5. $(8 + 0.8) × 125=1100$
6. $(10.892 - 5.6) ÷ 28=0.189$
2. $56.83 - 4.08 ÷ 24=56.66$
3. $2.39 + (5.43 + 7.6)=15.42$
4. $4.32 + 16.5 × 4=70.32$
5. $(8 + 0.8) × 125=1100$
6. $(10.892 - 5.6) ÷ 28=0.189$
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