Vocabulary
The answer to an addition problem.
What is sum?
How many ones are in the number 28?
There are 8 ones.
26 + 3 ____
29
Show how to add 32 + 37 on an open number line.
(jumps) ------>+30-->+7
32-----------------69
Emily's baseball team is playing a baseball game to raise money for a children's hospital. Emily's team scored 11 runs in the game. The other team scored 8 runs. How many runs were scored in all?
19 runs
A number that is added to another number.
What is an addend?
How many tens are in the number 137?
There are 3 tens.
17 + 11 ____
28
Solve 64 + 38 with break apart
54 + 38
/ \
30 8
54 + 30 = 84, 84 + 8 = 92
Lauren has 17 cakes and 24 pies to sell at the bake sale. How many cakes and pies does she have to sell?
41 cakes and pies
Finding the total, or sum, by combining two or more numbers together.
What is addition?
How many tens are in the number 6?
There are 0 tens.
46 + 24 ____
70
Solve 63 + 29 by using partial sums.
63 + 29
Tens: 60 + 20 = 80
Ones: 3 + 9 = 12
Sum: 80 + 12 = 92
Jordan sells 26 vanilla milkshakes and 19 chocolate milkshakes. How many milkshakes does Jordan sell in all?
45
Counting by equal groups (a number other than one).
What is skip counting?
How many tens and ones are in the number 36?
3 tens and 6 ones
43+24 =
67
Solve 47+ 15 +33 = ? by using compatible numbers and mental math.
47 + 15 + 33
Look at the ones:( 7 + 3 = 10) then, 5 more ones makes 15
40 + 10 + 30 + 15= 95
67 leaves were on the ground and 23 more fell down. Now how many leaves are on the ground?
90
The reorganization of numbers.
What is regrouping?
What is another way to write 9 tens and 3 ones?
93
12+ 34+ 22 +18 ____
86
Solve 23 + 77 using compensation
23 + 77
-3 +3
New Problem:
20 + 80 = 100
Ms. Baldino's garden has 24 red roses, 36 tulips, 18 sunflowers. How many flowers does she have altogether?
78