一、看图写算式。
$
$
3
+ 7
= 10
$$ $$10
- 3
= 7
$$ $$10
- 7
= 3
$
答案:
3 + 7 = 10
10 - 3 = 7
10 - 7 = 3
10 - 3 = 7
10 - 7 = 3
二、直接写出得数。
$6 + 4 = $
$10 - 3 = $
$6 + 4 = $
10
$ $$10 - 4 = $6
$ $$7 + 3 = $10
$ $$10 - 8 = $2
$ $$4 + 6 = $10
$10 - 3 = $
7
$ $$9 + 1 = $10
$ $$10 - 0 = $10
$ $$1 + 9 = $10
$ $$10 - 2 = $8
答案:
答题卡:
$6 + 4 = 10$
$10 - 4 = 6$
$7 + 3 = 10$
$10 - 8 = 2$
$4 + 6 = 10$
$10 - 3 = 7$
$9 + 1 = 10$
$10 - 0 = 10$
$1 + 9 = 10$
$10 - 2 = 8$
$6 + 4 = 10$
$10 - 4 = 6$
$7 + 3 = 10$
$10 - 8 = 2$
$4 + 6 = 10$
$10 - 3 = 7$
$9 + 1 = 10$
$10 - 0 = 10$
$1 + 9 = 10$
$10 - 2 = 8$
三、在$◯$里填“+”或“-”。
$10◯ 8 = 2$
$4◯ 5 = 9$
$8◯ 3 = 5$
$6◯ 3 = 9$
$8◯ 6 = 2$
$7◯ 3 = 10$
10 - 8 = 2
4 + 5 = 9
8 - 3 = 5
6 + 3 = 9
8 - 6 = 2
7 + 3 = 10
$10◯ 8 = 2$
$4◯ 5 = 9$
$8◯ 3 = 5$
$6◯ 3 = 9$
$8◯ 6 = 2$
$7◯ 3 = 10$
10 - 8 = 2
4 + 5 = 9
8 - 3 = 5
6 + 3 = 9
8 - 6 = 2
7 + 3 = 10
答案:
10 - 8 = 2
4 + 5 = 9
8 - 3 = 5
6 + 3 = 9
8 - 6 = 2
7 + 3 = 10
4 + 5 = 9
8 - 3 = 5
6 + 3 = 9
8 - 6 = 2
7 + 3 = 10
四、4个小朋友分西瓜,如果每人分3块,够吗?先圈一圈,再在正确答案后的$□$里画“√”。

(够$□$ 不够$\boxed{√}$)
(够$□$ 不够$\boxed{√}$)
4个小朋友每人分3块西瓜,共需要:$4 × 3 = 12$(块)。图中共有8块西瓜。$8<12$。不够$\boxed{√}$。
答案:
4个小朋友每人分3块西瓜,共需要:
$4 × 3 = 12$(块)。
图中共有8块西瓜。
$8<12$。
不够$\boxed{√}$。
$4 × 3 = 12$(块)。
图中共有8块西瓜。
$8<12$。
不够$\boxed{√}$。
五、把下面的数填入$□$里,使等式成立。每个数只能用1次。
1. 0 1 2 3 4 5 6 7 8 9 10
$□ + □ = □ + □ = □ + □ = □ + □ = □ + □$
2. 0 1 2 3 4 5 6 7 8 9 10
$□ - □ = □ - □ = □ - □ = □ - □ = □ - □$
1. 0 1 2 3 4 5 6 7 8 9 10
$□ + □ = □ + □ = □ + □ = □ + □ = □ + □$
0+10=1+9=2+8=3+7=4+6
2. 0 1 2 3 4 5 6 7 8 9 10
$□ - □ = □ - □ = □ - □ = □ - □ = □ - □$
10-9=7-6=5-4=3-2=1-0
答案:
1. $1 + 9 = 2 + 8 = 3 + 7 = 4 + 6 = 5 + 5$(错,5重复) 改为:$0 + 10 = 1 + 9 = 2 + 8 = 3 + 7 = 4 + 6$
答案写:$0+10=1+9=2+8=3+7=4+6$
填数(从左到右):0,10,1,9,2,8,3,7,4,6
2. $10 - 9 = 7 - 6 = 5 - 4 = 3 - 2 = 1 - 0$
填数(从左到右):10,9,7,6,5,4,3,2,1,0
答案写:$0+10=1+9=2+8=3+7=4+6$
填数(从左到右):0,10,1,9,2,8,3,7,4,6
2. $10 - 9 = 7 - 6 = 5 - 4 = 3 - 2 = 1 - 0$
填数(从左到右):10,9,7,6,5,4,3,2,1,0
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