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四年级小数加减法教案

四年级小数加减法教案

  17×40=100-63=3。2+1。68=2。8×0。4=14-7。4=1。92÷0。04=0。32×500=65+4。35=10-5。4=4÷20=3。5×200=1。5-0。06=0。  75÷15=0。4×0。8=4×0。25=36+1。54=1。01×99=420÷35=25×12=135÷0。5=0。51÷17=32。8+19=5。2÷1。3=1。6×0。4=4。  9×0。7=1÷5=6÷12=87-0。49=17×40=100-63=3。2+1。68=2。8×0。4=14-7。4=1。92÷0。04=0。32×500=65+4。35=10-5。  4=4÷20=3。5×200=1。5-0。06=0。75÷15=0。4×0。8=4×0。25=0。36+54=1。01×99=5÷35=25×12=135÷0。5=0。51÷17=32。  8+19=5。2÷1。3=1。6×0。4=4。9×0。7=1÷5=6÷12=87-0。49=17×40=100-63=3。2+1。68=2。8×0。4=14-7。4=1。92÷0。  04=0。32×500=0。65+35=10-5。4=4÷20=3。5×200=1。5-0。06=0。75÷15=0。4×0。8=4×0。25=0。3+1。54=1。1×99=20÷35=25×12=135÷0。  5=。

2.2+3.6=?

1. 0.32+1.57=? 2. 9.25+2.25=? 3 9.23+4.52=? 4. 4.22+8.46=? 5. 5.63+1.25=? 6. 9.36-1.59=? 7. 5.63-5.21=? 8. 4.65-1.15=? 9. 7.65-4.19=? 10. 8.88-2.69=? 答案: 1.89 11.5 13.75 12.68 6.88 7.77 0.42 3.5 3.46 6.19

1.2-1.2=

01微课视频

06:3404:3202:56

02电子教材

课时作业

课时作业答案

6.84-5.73= 5.2-0.08= 3.25+0.75= 0.97+6.13= 4.9-0.85= 2.13+6.89= 1.72+3.6= 17.2—0.36= 11.6-9.23= 0.78+2.2= 5.2-0.08= 3.25+0.75= 4.22+8.46= 5.63+1.25= 5.63+1.25= 9.36-1.59= 4.65-1.15= 7.65-4.19= 8.88-2.69= 0.72+0.91= 8.24+3.76= 4.12-3.8= 14.3+0.78= 1.3+8.56= 4-0.04= 1.2-0.03= 3.5+3.05= 0.8-0.45= 5.2-0.08= 3.25+0.75= 0.8-0.55= 0.83+0.68= 5.63-5.21= 9.25+2.25= 5.40-4.86= 5.03-2.90= 1.59+3.95= 6.54+0.58= 54.49-22.5= 23.5+21.35= 9.36+43.56= 16.65+18.87= 0.99+24.85= 9.45-6.61= 85.69-48.58= 45.46-26.57= 64.19-29.57= 33.84+16.5= 3.8+61.18= 35.65-19.9= 6.49-4.81= 35.4-24.58= 2.65+9.25= 1.65+4.05= 6.65-1.24= 6.56-2.87= 9.08-0.28= 6.25-5.73= 31.51+8.4= 8.43+8.81= 26.34-15.24= 17.38+15.25= 16.68-9.54= 54.6-42.1= 13.24+8.64= 6.25-5.94= 6.3-1.18= 16.3+5.16= 41+18.24= 45.52-22.18= 69.52-31.48= 6-5.33=

小数的加减只需把小数点5261对整齐,按照整4102数加减一样计算.3.14+5.68=
5.99+0.59=
2.59+6.14=
48.5+586.5=
369.2+153.5=
59.3+15.3=
59.3+95.86=
2.6+l.4=1653
1.9+0.8l=
0.58+0.42=
1.63—1.23=
0.9-0.25=
9.9—0.01=
4—2.3=
3.2一1.7=
7.05-0.05=
0.78—0.38=
3.5十5.5=
5.5—3.9=
8.42+9.48=
42.56+3.124=
91.26-30.35=
8.6+5.6=
15.6十0.237=
80-52.l=
7.35—1.41=
18.51-9.03=
IO.27十0.78=
24.6一3.98=
32+6.4=
15.5十26.5=
64.3一18.75=
15.7一11.25=
8.6+5.6=
18.51-9.03

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