Algebra
Addition and Subtraction
Equations
34 - = 31
Give 3 numbers that make this
statement true.
3
34 - = 31
Start by subtracting-
34
- 31
34 - 3 = 31
Check by working the problem out.
34
- 3
31
Yea!
42 + is greater than 57
Again, start by subtracting-
57
- 42
15
42 + is greater than 57
We know that 42 + 15=57
We need the number we add to
be greater than 57. So, we +1 to
15 and get 16!
42 + is greater than 57
42 + 16= 58
58 is greater than 57. So, our answer
is
16
42 + is greater than 57
If we were asked to give 3 numbers to
make this statement true, I would start
with 16 and pick the next 2 numbers
that are greater than 16.
16, 17, and 18
42 + is greater than 57
Check your answers: They should all be
greater than 57
42 + 16 = 58
42 + 17 = 59
42 + 18 = 60
16, 17, and 18 are
Correct!
Give 3 numbers that make this
statement true.
Lets give it a try!
76 + is greater than 97
Remember to start by
subtracting!
Give 3 numbers that make this
statement true.
76 + is greater than 97
76+21=97
We want a number greater
than 97. So what is the next
bigger number?
22
76 + is greater than 97
If we were asked to give 3 numbers to
make this statement true, I would start
with 22 and pick the next 2 numbers
that are greater than 22.
22, 23,and 24
76 + is greater than 97
Check your answers-
76 + 22 = 98
76 + 23 = 99
76 + 24 = 100
22, 23,and 24 are
correct!
Give 3 numbers that make this
statement true.
Lets give it a try!
48 - is less than 35
Remember to start by
subtracting!
48-35=
Give 3 numbers that make this
statement true.
48 - is less than 35
48-35=13
We want a number less than
13. So what is the next
smaller number?
12
48 - is less than 35
If we were asked to give 3 numbers to
make this statement true, I would start
with 12 and pick the next 2 numbers
that are less than 12.
12, 11,and 10
Give 3 numbers that make this
statement true.
14 + is greater than 22
9, 10 and 11
Give 3 numbers that make this
statement true.
29 - is less than 17
11, 10, 9
Give 3 numbers that make this
statement true.
19 + is greater than 30
12, 13, 14
Give 3 numbers that make this
statement true.
10 + is less than 56
45, 44, 43
The End