Represent Addition and Subtraction Problems
The pet store has 22 land turtles and 35 freshwater turtles. How many turtles does the pet store have in all?
Which equation models the problem?
a. 22 + ? = 35
b. 22 + 35 = ?
c. ? + 22 = 35
d. 35 - 22 = ?
b. 22 + 35 = ?
Roger needs 50 pennies. He has 15 pennies in his piggy bank and 10 pennies in his pocket. How many more pennies does Roger needs?
a. 10
b. 15
c. 20
d. 25
d. 25
True of False?
84 - 30 = 30 + 24
True
54 = 54
Which number will make the equation ture?
75 + ___ = 85 + 15
a. 20
b. 25
c. 30
d. 10
b. 25
How many quarters make a dollar?
4
Some dogs are at the parl. 10 dogs join them. Now there are 24 dogs.
Part A: Choose the equation that models the problem.
a. 10 + 24 = ?
b. ? + 10 = 24
c. 14 + 14 = ?
d. 10 + ? = 20
Part B: There were ____ dogs at the park before the other dogs joined them.
Part A: b. ? + 10 = 24
Part B: 14
There are 7 red birds and 21 blue birds in the park. If 9 more blue birds come, how many birds will there be in all?
a. 5
b. 16
c. 30
d. 37
d. 37
Choose all the true equations:
a. 55 - 25 = 56 - 24
b. 77 - 27 = 31 + 19
c. 28 = 35 - 7
d. 48 - 39 = 19
e. 25 - 16 = 8 + 0
b. and c.
Which number will make the equations true?
20 + 28 = 60 - ___
a. 8
b. 10
c. 12
d. 13
c. 12
How many legs does a spider have?
8
There are 54 runners in the running club.
There are 28 boys and some girls.
How many girls are in the running club?
Write and equation and give the answer to the equation.
54 - 28 = 26
Ken needs to buy 100 nails. He buys 25 nails at one store and 36 nails at another store. How many more nails does Ken need to buy?
39
Which equation is false?
a. 40 = 58 = 18
b. 32 + 21 = 60 - 7
c. 8 + 8 = 50 - 34
d. 81 - 29 = 51
d. 81 - 29 = 51
Chris had 16 points. Then he got some more points. Joy has 29 points. If the game ends now, it will end in a tie. How many more points did Chris get?
13
How many planets are in our solar system?
8
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Jayden has 28 plants.
12 are tomato and the rest are pepper plants.
Part A: Which two different equations model the problem?
a. 28 - ? = 12 and 12 + ? = 28
b. 24 - ? = 12 and 12 + ? = 24
c. 28 - ? = 10 and 10 + ? = 28
d. 40 - ? = 12 and 12 + ? = 40
Part B: How many pepper plants does Jayden have?
Part A: a. 28 - ? = 12 and 12 + ? = 28
Part B: 16
Kendra drew 26 stars. She erased 12 stars. Then she drew some more stars. Now there are 29 stars. How many more stars did she draw? Write an equation and solve.
26 - 12 = 14
29 - 14 = ?
? = 15
True or false?
26 + 46 = 25 + 40
false
39 + 20 = 37 + _____
22
How many colors in the rainbow?
7
red, orange, yellow, green, blue, indigo, violet
Kelly has 32 books.
19 are on the shelf and the rest are on her desk.
Part A: Which two different equations model the problem?
a. 32 - ? = 19 and 19 + ? = 32
b. 30 - ? = 19 and 19 + ? = 30
c. 51 - 32 = ? and 32 + 19 = ?
d. 30 - ? = 20 and 20 + ? = 30
Part B: How many books are on Kelly's desk?
Part A: a. 32 - ? = 19 and 19 + ? = 32
Part B: 13
Vincent saw 18 ducks on land and 6 ducks on the water. Five ducks fly away.
Part A: Which set of equations can Vincent use to find out how many ducks are left?
a. 18 + 5 = 23 and 23 - 6 = ?
b. 18 + 6 = 24 and 24 - 5 = ?
c. 6 + 5 = 11 and 11 + 18 = ?
d. 18 - 6 = 12 and 18 + 12 = ?
Part B: How many ducks are left?
Part A: b. 18 + 6 = 24 and 24 - 5 = ?
Part B: 19
Which expression could be placed on the right side of the equal sign to make a true equation?
36 - 18 = __________
a. 9 + 9
b. 37 - 17
c. 18 + 20
d. 52 - 36
a. 9 + 9
Juan and Taylor have the same number of marbles after giving some away. Juan had 65 marbles and gave away 16. Taylor had 59 marbles and gave some away. How many marbles did Taylor give away?
10
How many bones are there in the human body?
206