Martin collected 36 leaves on Thursday. On Friday, he collected 55 leaves. How many leaves did Martin collect in all?

Find the sum of 18 and 52 using mental math.

Find the missing number.

Find the second addend of 59 to make a 10.

One number makes both the equations true. Find the missing number.
14 + ⎕ = 26
⎕ + 26 = 38

Find the numbers in place of A, B and C.

Billy puts 32 skateboard wheels in a pile. He puts 28 more wheels in another pile. How many wheels does Billy have in all?

Carmen planted 21 trees. Patrick plants 19 trees. How many trees did they plant in all?

Team A has 6 points more than Team B. Team B has 28 points. How many points does team A have?

Mika has 43 buttons. Sara has 29 buttons. How many buttons do they have in all?

Jamie has 24 cans to recycle. Lisa has 27 cans. How many cans do they have in all?

We can add two things only if they belongs to same unit.

Find the missing number.

Find the sum of 41 and 23 using mental math.

Identify the first step for finding the sum of 14 and 28 mentally.

Find the missing number.

Find the sum of 23 and 48 using mental math.