Question

Marvin find doubles facts, such as 4+4 and 1+1,on the addition table. He colors each sum. What pattern does Marvin make when he colors the sums of the double facts?

Answer 1

4+4=8 so 1+1=2 that the answer

Answer 2

Answer with explanation:

Addition table (Composition = +Addition)

+ | 1 2 3

---|-----------------------

1 | 2 3 4

2 | 3 4 5

3 | 4 5 6

The pattern that Marvin has made to find the sum of any doubles Facts is :

⇒ a + a = 2 × a

For example :

→ 1 + 1 = 2 × 1 =2

→ 2 +2 =2 × 2=4

→ 3+3= 2 × 3 =6

→ 4 +4 = 2 × 4=8