小学四年级下册数学小数.docx

小学四年级下册数学小数.docx

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小学四年级下册数学小数

6.65-4.23＋1.45=12.7-6.6＋3.24=6.56＋3.45=4.2222+3.2=

8.75－3.23＋2.25=7.8＋5.5=1456.23+9.6-8.6=5.2+6.3-584.3=

69.12+78.39=64.2+15.4=42.55-0.69=0.55-0.33=

45.96-24.41=75.2-28.3=1.256+65.222=6.65-4.23＋1.45=

12.7-6.6＋3.24=6.56＋3.45=63.1-13.8=3.34-2.07=

5.32＋4.39=103.9+450.6=13.88-5.77=96.12+52.3=

1.2+96.6=2.6-35.6=10.23-0.88=4.56+14.62=

7.9+53.1=56.4+23.1=96.4-57.1=55.1+65.9=

56.78-21.5=96.1-43.2=0.9＋1＝45-31.23＝

2.7＋3.9＝1－0.44＝0.7＋0.9=3.25＋0.75=

14.6－0.4=10－0.1=1－0.78=1－0.3=

5－0.08=1.64＋2.35=8.34－6.22=12.6＋3.4=

7.2+6.9=1.3+4.3-0.12=9.3-8.8=4.4+15.99=

1.5+3.8=2.8+1.2=7.3+2.7=7.4-3.6=

19.8-5.6=96.3-56.2=79.2+56.8=1.99+25.7=

93.88-69.21=0.33+9.88=136.5-105.7=63.4+52.1=

93.1-20.9=63.1-13.8=103.9+450.6=13.88-5.77=

96.12+52.3=13.2+65.1=12.3+96.5=78.9-65.4=

42.5-19.5=73.55-14.68=46.32+65.18=95.44+53.12=

96.42-13.88=42.5-17.8=63.22-22.77=69.12+78.39=

64.2+15.4=4.2222+3.2=5.2+6.3-584.3=42.55-0.69=

0.55-0.33=45.96-24.41=75.2-28.3=1456.23+9.6-8.6=

1.256+65.222=0.32-0.16=0.35+0.55=0.87-0.8=

0.24-0.08=0.92-0.37=1.4+0.6=3.6+4.2=

0.72-0.48=6.8+3.2=7.1-3.4=0.42+0.66=

0.32+0.68=2.8+7.2=0.65+0.19=3.09+1.2=

3.25+5.64=0.25+0.47=0.82+0.18=7.8+2.4=

0.45-0.18=0.4+0.16=8.2+1.8=0.73+0.27=

8-3.2=9.8-4.8=3+2.4-0.292=2.8-0.9=

1.29-0.18=5.1-0.8=10-0.3=6.4+1.3=

9+0.1=8.9-4.9=6.8-0.7=8-0.72=

6.6-3.4=1.2-0.8=7.3+6.2=8.7+3.6=

12.3+0.7=0.8+9.2=4.7-1.9=5.1-3.9=

1.4-0.6+2.256=3.8+6.4=0.6+7.45=4.9+0.1=

4.5+3.2=1.8+0.9=6.5+0.5=10.5-6.5=

7.5+0.5=0.78-0.28=12.8-2.8+3.5=9.6-2.3=

3.8+0.12=0.8-0.08=10-7.4-1.93=7.5-3.2=

0.42+0.58=0.8+0.15=2.5+0.4=8.2-2.6=

1.4-0.7=2.5+4.6=0.5+9.8=6.7-2.6=

7.2+5.9=9.67+8.07-3.6=5.69-2.48=2.9+4.1=

9.1-6.7=2.03+1.2=8.6-4.9=1.3+2.03=

9.46-7.21=1.56+2.24=3.5-1.25=0.75＋0.4=

20＋0.78=4.8＋4.2=5.7－3=4.9－1.7=

1.34＋0.8=2－0.75=8.7＋0.03=0.2－0.09=

8.5＋2.5=3.4－1.4=0.68＋0.42=7.82－7.2=

2.36＋9.1=0.48＋0.52=8.1－5.1=0.78－0.24=

0.8＋0.18=0.89－0.25=1－0.98=0.9＋0.1=

1－0.8=4.5－4=5.6＋4=5.7＋3.3=

10－4.4=6＋6.6=9.5－2.7=1－0.55=

3.7＋4.8=7＋3.3=3.25＋0.75=2.7＋3.9=

0.7＋0.9=1－0.44-0.04＝0.9＋1=44.6－0.4=

10－0.1=14＋0.78=3＋2.7=5－0.08=

1.64＋2.35=1.1－1=8.34－6.22=12.6＋3.4=

1.3＋4.3=7.2＋6.9=9.3－8.8=4.4＋15.99=

19.8－5.6=96.3－56.2=79.2＋56.8=1.9＋25.793=

88－69.21=93.27-12.56=15.6+3.2=45.6+90.1=

脱式计算。

8.56-4.65+8.295.76+8.65-0.89

32.5+13.29-18.0424.5+（3.74-0.98）

10-1.39-4.20560.6-（3.14+0.4）

18-（4.6+2.08）+0.024.69+3.02+0.04+2.7

30.48+（5.2-4.295）75.42-14.34-0.24-5.49

3.34＋4.75-2.075.32＋4.39＋3.11

6.65-（4.23＋1.45）12.7-6.6＋3.24

6.56＋3.45－3.368.75－（3.23＋2.25）

6.7－5.8＋2.038.6＋3.72－5.55

6.14－（1.23＋1.38）7－5.5＋3.06

6.72-3.28-1.720.45+6.37+4.55

用简便方法计算。

6.38+7.56+3.6224.56-3.81-4.19

0.456＋6.22＋3.786.9＋4.8＋3.1

5.34+6.18+4.66+3.8259.2-1.43-8.57

3.92+4.7+0.08+5.3（3.38+2.75）+0.25

9.1+6.8+3.2+0.90.473+5.6+0.527

15.89＋（6.75－5.89）4.02＋5.4＋0.98

3.68＋7.56－2.687.85＋2.34－0.85＋4.66

35.6－1.8－15.6－7.23.82＋2.9＋0.18＋9.1

9.6＋4.8－3.67.14－0.53－2.47

5.27＋2.86－0.66＋1.6313.35－4.68＋2.65

73.8－1.64－13.8－5.3666.86－8.66－1.34

32＋4.9－0.95.17－1.8－3.2

36.8－3.9－6.125.48－（9.4－0.52）

15.02-6.8-1.02146.5－（23＋46.5）

5.93+0.19+2.811.76+0.195+3.24

2.35+1.713+0.287+7.656.02+3.6+1.98

0.134+2.66+0.8661.27+3.9+0.73+16.1

3.07－0.38－1.621.29＋3.7＋2.71＋6.3

3.25＋1.79－0.59＋1.7523.4－0.8－13.4－7.2

3.2＋0.36＋4.8＋1.6413.75－（3.75＋6.48）

9.43-（6.28-1.57）8－2.45－1.55

4.8+8.63+5.2+0.371.57+0.245+7.43

7.5＋4.9－6.53.9－4.1＋6.1－5.9

5.48-3.9943.12+98.76+3.79+223.24

4.87+5.6+11.36.3+23.4+0.09+4.7+43.6