试题 试卷
题型:口算与估算 题类: 难易度:容易
【小白鸥-情境题】数学北师大四上第三单元自测卷(1)
24×500=
110×40=
150×20=
625×0=
140×50=
30×303=
400÷50= 40×80 = 620÷20 = 18×5+4 =
19×30 = 4800÷400 = 6400÷80 = 3×25×4 =
560÷70 = 28×400 = 405×20 = 125×5×8 =
140×60=
50×60=
40×110=
204×42≈
29×199≈
28×50=
0×78=
55×80=
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