(1)算式(
A.72÷37
B.726÷37
C.276÷37
B
)的商是两位数。A.72÷37
B.726÷37
C.276÷37
答案：B
(2)计算除法算式(
A.464÷58
B.231÷33
C.294÷43
C
)时,第一次试商后要把商调小。A.464÷58
B.231÷33
C.294÷43
答案：C
(3)与95÷5得数相等的算式是(
A.950÷5
B.9500÷50
C.950÷50
C
)。A.950÷5
B.9500÷50
C.950÷50
答案：C
(4)根据10÷3= 3……1,可知1000÷300的得数是
A.300……100
B.3……10
C.3……100
C
。A.300……100
B.3……10
C.3……100
答案：C
(5)650÷30的余数是(
A.2
B.20
C.200
B
)。A.2
B.20
C.200
答案：B
(6)计算720÷18时,把它改写成算式
A.720÷9÷2
B.720÷9×2
C.720÷2×9
A
可以使计算比较简便。A.720÷9÷2
B.720÷9×2
C.720÷2×9
答案：A
2. 计算下面各题,并验算。
(1)530÷40 (2)370÷80 (3)650÷70
(1)530÷40 (2)370÷80 (3)650÷70
答案：
=13……10
=4……50
=9……20
=13……10
=4……50
=9……20
3. 用你喜欢的方法计算。
(1)270÷5÷6 (2)540÷36 (3)450÷18
(1)270÷5÷6 (2)540÷36 (3)450÷18
答案：=270÷(5×6)
=270÷30
=9
=540÷(4×9)
=540÷9÷4
=60÷4
=15
=450÷(9×2)
=450÷9÷2
=50÷2
=25
=270÷30
=9
=540÷(4×9)
=540÷9÷4
=60÷4
=15
=450÷(9×2)
=450÷9÷2
=50÷2
=25