Vocabulary
What do we call the answer to an addition problem?
Sum
What is the sum of 19 and 39?
58
87 + 11 = ___
98
56 - 34 = ___
22
1 + x = 6
x = 5
Is "take away" a key word for addition or subtraction?
Subtraction
Mr. Ivan creates 33 math problems. Ms. Madeline creates 17 math problems. How many math problems do they create in all?
50 math problems
33 + 23 = ___
56
84 - 23 = ___
61
x - 2 = 4
x = 4
Is "less than" a key word for addition or subtraction?
Subtraction
What is the difference between 57 and 32?
25
43 + 37 = ___
80
28 - 19 = ___
10 + x = 35
Is "In total" a key word for addition or subtraction?
Addition
Ms. Dahana has 34 plants inside her house. She puts 16 of the plants outside. How many plants are left inside the house?
18 plants
98 + 26 = ___
124
74 - 36 = ___
38
2 x 3 = x
x = 6
Is "altogether" a key word for addition or subtraction?
Addition
Wyatt and Arash have 58 toys altogether. Trey has 29 toys. How many more toys do Wyatt and Colin have?
29 toys
76 + 25 = ___
101
67 - 28 = ___
39
10x = 20
x = 2