一、口算。
$55 - 37 =$
$2×6 =$
$18÷4 =$
$3×8 =$
$43 + 48 =$
$27÷5 =$
$76 - 49 =$
$3×7 =$
$34÷6 =$
$6×5 =$
$82 - 54 =$
$33÷7 =$
$60 - 22 =$
$8×4 =$
$72÷8 =$
$7×7 =$
$37 + 26 =$
$51÷9 =$
$37 + 37 =$
$5×9 =$
$17÷7 =$
$8×5 =$
$52 - 24 =$
$25÷5 =$
$42 + 27 =$
$7×6 =$
$12÷3 =$
$6×9 =$
$70 - 54 =$
$55÷6 =$
$55 - 37 =$
$2×6 =$
$18÷4 =$
$3×8 =$
$43 + 48 =$
$27÷5 =$
$76 - 49 =$
$3×7 =$
$34÷6 =$
$6×5 =$
$82 - 54 =$
$33÷7 =$
$60 - 22 =$
$8×4 =$
$72÷8 =$
$7×7 =$
$37 + 26 =$
$51÷9 =$
$37 + 37 =$
$5×9 =$
$17÷7 =$
$8×5 =$
$52 - 24 =$
$25÷5 =$
$42 + 27 =$
$7×6 =$
$12÷3 =$
$6×9 =$
$70 - 54 =$
$55÷6 =$
答案
一、18 12 4……2
24 91 5……2
27 21 5……4
30 28 4……5
38 32 9
49 63 5……6
74 45 2……3
40 28 5
69 42 4
54 16 9……1
24 91 5……2
27 21 5……4
30 28 4……5
38 32 9
49 63 5……6
74 45 2……3
40 28 5
69 42 4
54 16 9……1
二、用两种方法写出钟面上的时间。

(
( : )

(
( : )

(
( : )

(
( : )
(
6
)时(40
)分( : )
(
2
)时(25
)分( : )
(
4
)时(45
)分( : )
(
9
)时(15
)分( : )
答案
二、6 40 6:40
2 25 2:25
4 45 4:45
9 15 9:15
2 25 2:25
4 45 4:45
9 15 9:15
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