Addition with 2 numbers
22 + 11 = ?
33
18 + 15 + 12 = ?
45
5 + 4 = 9
What are 5 and 4 in the addition equation?
Addends
Avery and Hunter count 35 butterflies. Suddenly more butterflies join them. Now, there are 55 butterflies.
How many butterflies join them?
20
In the number 43, what number is in the ones place?
3
55 + 23 = ?
78
16 + 32 + 28 = ?
76
5 + 4 = 9
What is 9 in the addition equation?
Sum
Liv and Liam Y. buy 18 eggs. They use 10 of them for baking. Then they buy 36 more eggs. How many eggs does Liv and Liam Y. have now?
18 - 10 = 8
8 + 36 = 44 eggs
In the number 25, how many tens are there?
2 tens or 20
75 + 19 = ?
94
32 + 16 + 18 + 31 = ?
97
What is it called when you move a group of ten to a different place value in an addition problem?
Regrouping
Charles puts 25 toys into an empty toy box. Then she puts 17 more toys in the toy box. How many toys are in the box in all?
42
In the number 67, how many tens and ones are there?
There are 6 tens and 7 ones.
33 + 49 = ?
Use place value drawings to solve.
84
___ + 24 + 18 + 4 = 52
Find the missing number in the equation.
6
What is the math strategy called where you find the sums of the tens and ones and then add them together to find the complete sum?
Partial sums
Lily picks 55 blueberries. Next, Lily eats 6 of these blueberries. Then she picks 27 more. How many blueberries does she have now. Make a model to show your work.
76
21 + 35 = ?
Solve & explain how many tens and ones there in the sum.
56. There are 5 tens and 6 ones in the sum.
76 + 18 = ?
Use partial sums to solve.
94
27 + 23 + 18 + ___ = 81
Find the missing number in the equation.
13
The strategy in math where you figure out math addition and subtraction in your head.
Mental math
The second graders take a trip to the aquarium. The first group sees 23 fish. The second group sees 14 fish. The third group sees 34 fish. How many fish do they see in all?
Solve using drawings, models, or an equation.
71 fish in all
25 + 44 + 27 = ?
Solve and explain how many tens and ones are in the sum.
96. There are 9 tens and 6 ones.