2 小数除法
我会利用商不变的性质简算.
(1)560÷3.5 (2) 3.9÷26 (3)2.87÷0.25
=560÷(0.5×7) =3.9÷ ÷ = ÷(0.25×4)
=560÷7÷0.5 = =
= = =
在横线里填上“>”、“<”或“=”.
68×1.2 4.6
837.8×0.9 37.8
152 = 15×15
76÷2.5 5.76
0.8÷0.5 0.8
0.9×l 0.9.
直接写出得数.
479+321= 4﹣0.78= 8÷0.01= 8×37.5%= (
+
)×12=
÷(
+
)= 1﹣
×
= 1.25×0.16×8=
×
÷
×
=
×4+4×
=
直接写出得数.
7.1+3.9= 2.4×5= 6.8+3.7﹣6.8= 7×8×(
+
)=
+
= 8.42÷0.1= 13×4÷13×4= 135.6﹣17.6﹣82.4=
直接写出得数.
327+199= 10﹣0.98= 3×101= 1.616÷4=
1﹣
﹣
=
×0×
= 5﹣5×0.6= 0.19+1.87+0.81=
÷
×
= 7.8×4﹣4×7.8= 12×(
+
)= 44÷13×26÷22=
直接写出得数
1﹣2÷3= 18+125+82= 25×64﹣25×58= 2001﹣199=
5×1.7×0.2= 9.82﹣(2.5+1.82)= 1212÷3= 0.9+99×0.9=
(
+
+
)×12= 9.25×4= (64+1.6)÷0.8=
÷(1+20%)×15=
计算
(1)5.425+4.575=
(2)67﹣48=
(3)36÷2=
(4)7.2÷0.04=
(5)6÷
=
(6)42×
=
(7)
=
(8)
=
(9)
=
(10)
=





乘以一个数a时,把3.5
看成3.56,使乘积比正确结果减少0.02.则正确结果应该是 .
=
÷
=
= 4.3÷0.1=
×17﹣
×
= 3.6×9+3.6= 1.03﹣0.43=
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