Related Equations
Doubles
+1 or -1
Number Bonded Family
9s
100

9 - 2 = 7. The related addition equation is 7 + 2 = ?.

What is 9?

100

2 + 2 的總數

什麼是 4 ?

100

5 多一

什麼是 6?

100

數字泡泡裡有 2, 4, 和 6。 請提供分分合。

什麼是 2 和 4 是分, 而 6 是合。

100

9 + 5 = ?

什麼是 14?

200

5 + 3 = 8. The related subtraction equation is 8 - 5 = ?.

What is 3?

200

5 + 5 的總數

什麼是 10 ?

200

5 少一

什麼是 4?

200

2, 4, 6

? + ? = 6

什麼是 2 + 4?

200

9 + ? = 11

什麼是 2?

300

9 - 0 = 9. The related addition equation is ? + 9 = 9.

What is 9?

300

12 - 6 的差數

什麼是 6?

300

12 多一

什麼是 13

300
2, 4, 6

? - ? = 4

什麼是 6 - 2?

300

16 - 9 = ?

什麼是 7?

400

4 + 6 = 10. The related subtraction equation is 10 - ? = 4.

What is 6?

400

18 - ? = 9

什麼是 9?

400

20 少一

什麼是 19?

400

2, 4, 6.

? + ? = 6
? + ? = 6

6 - ? = ?
6 - ? = ?

什麼是

2 + 4 = 6
4 + 2 = 6

6 - 4 = 2
6 - 2 = 4?

400

13 - ? = 9

什麼是 4?

500
8 + 1 = 9. What are the two related subtraction equations?

What is 9 - 8 = 1 and 9 - 1 = 8?

500

如果 4 + 4 = 8, 那 ? + ? = 16.

什麼是 8 + 8?

500

大明哥哥有十片餅乾。大明吃了一片。哥哥還有幾片餅乾?

什麼是九片?

500

4, 5, 9

? = ? + ?
? = ? + ?

? = ? - ?
? = ? - ?

9 = 4 + 5

9 = 5 + 4

4 = 9 - 5
5 = 9 - 4

500

? = ?

18 = ? + ?

什麼是 9?
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