内容正文:
Unit 9 It's one hundred.
...
Hello, I'm your math teacher, Miss Li.
But today we're going to learn math in English.
Sum up to 100
(100 以内的 求和)
P 42
Sum up to 100
(100 以内的 求和)
4 0
2 4
+
6 4
P 41
right
Sum up to 100
(100 以内的 求和)
4 6
5 4
+
1
1
0
1 0
It's wrong.
Please think again.
P 41
Is this right, Miss Li?
Oh! I'm wrong.
It's 100.
Yes, it's right.
Thank you, Miss Li.
Sum up to 100
(100 以内的 求和)
P 43
We know the sum(求和).
It's 100.
There're 5 numbers here.
We know:
15, 23, 26 and 27.
What's the missing number?
15
23
26
27
minus
plus
$$