what does it mean to write the doubles fact you used to solve problem 0+1

Question

This is first grade math - no other directions were given.

Answer 1

I assume that this is meant to illustrate that zero added to a number does not change the number.

Answer 2

Doubles are number sentences the use the same number to added twice. 2+2=4, once they know this by hard. they use the knowledge to solve 2+3= ?, knowing that 2+2=4 and that 3 is 1 greater than 2, the logical conclusion is that the answers is 1 more than 4 which is 5.

Answer 3

hello dear

i hv question

add: write the doubles fact you used to solve the problem

like  7+8=

6+7=

4+3=

8+9=

Answer 4

I dont know

Answer 5

7777

Answer 6

0+0-this is a double fact.

so would be:

0+0+1

0+0=0

0+1=1