一、口算。
9 + 6 =
8 + 8 =
11 + 4 - 7 =
5 + 6 =
5 + 7 =
12 - 7 + 4 =
8 + 5 =
7 + 9 =
13 - 6 + 8 =
4 + 7 =
3 + 8 =
11 - 8 + 5 =
9 + 6 =
8 + 8 =
11 + 4 - 7 =
5 + 6 =
5 + 7 =
12 - 7 + 4 =
8 + 5 =
7 + 9 =
13 - 6 + 8 =
4 + 7 =
3 + 8 =
11 - 8 + 5 =
答案
9 + 6 = 15
8 + 8 = 16
11 + 4 - 7
= 15 - 7
= 8
5 + 6 = 11
5 + 7 = 12
12 - 7 + 4
= 5 + 4
= 9
8 + 5 = 13
7 + 9 = 16
13 - 6 + 8
= 7 + 8
= 15
4 + 7 = 11
3 + 8 = 11
11 - 8 + 5
= 3 + 5
= 8
8 + 8 = 16
11 + 4 - 7
= 15 - 7
= 8
5 + 6 = 11
5 + 7 = 12
12 - 7 + 4
= 5 + 4
= 9
8 + 5 = 13
7 + 9 = 16
13 - 6 + 8
= 7 + 8
= 15
4 + 7 = 11
3 + 8 = 11
11 - 8 + 5
= 3 + 5
= 8
二、在括号里填上合适的数。




7 + () = 13
8 + () = 13
6 + () = 14
13 - 7 = ()
13 - 8 = ()
14 - 6 = ()
7 + () = 13
8 + () = 13
6 + () = 14
13 - 7 = ()
13 - 8 = ()
14 - 6 = ()
答案
7 + (6) = 13
8 + (5) = 13
6 + (8) = 14
13 - 7 = (6)
13 - 8 = (5)
14 - 6 = (8)
8 + (5) = 13
6 + (8) = 14
13 - 7 = (6)
13 - 8 = (5)
14 - 6 = (8)
三、看图列式计算。
1.
$□◯□=□$(个) $□◯□=□$(个)
2. $□◯□=□$(颗)
3.
$□◯□=□$(个)
4.
$□◯□=□$(盒)
1.
$□◯□=□$(个) $□◯□=□$(个)
2. $□◯□=□$(颗)
3.
$□◯□=□$(个)
4.
$□◯□=□$(盒)
答案
1.
$15-8=7$(个)
$15-7=8$(个)
2.
$14-7=7$(颗)
3.
$12-6=6$(个)
4.
$13-8=5$(盒)
$15-8=7$(个)
$15-7=8$(个)
2.
$14-7=7$(颗)
3.
$12-6=6$(个)
4.
$13-8=5$(盒)
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