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1、期末计算练习卷三班级 姓名 成绩 一、计算，能简便的要简便。375+4501825 （+）+ 12（+-）4101 + （+）+63-63 2.254.8+77.50.48 4(-)(51+)17 9991999 (+)15171017.8 200012.52.50.84 13.2-3.7-6.338+170.25+4525% 2.787.8+2.783.2-2.7819.9+19.999 (+) 24+1761.9321250.25 (+)24 10.26-(3.78+4.26)(4.6-2.62)0.4 (-)35 +480.3612.5 (-) +(-)5.399+5.3-30 1.25
2、320.25 3682.54+ 7+3 9999+999+99+949.2(4.32-0.4) 2.23+2.772.5 +5.4+4.6 6.752.4+4.252.4-2.4二、解方程。-28=50 -= = =3-1.2=3.6 +25%=3.75 : =: -20%=7.24.5-3=4.5 :12.8=10:8 :=: 4: =1.4:5.61.2+2.6=5.1 += 0.75-= : =:4+= 2.8= 12+1.5=5.1 -=0.9+1.3=5.28 5: =: 5.5-1.3=12.65(-2.8)=140 :=3.8 25(20-)=3015= 5.4:1.8=:15 :=: =:6=0.7:0.28 8: =: = 7.2:12=:2.8: =4:1 = :6= =: =6:0.15 :=4: 3.6=1.83 15.6:2.88=2.6: :1.3=3.2:0.9 6:15=:202764=368 :12=0.5: 16:12=40:
