Ashley has some cookies. She eats 23 cookies. If she has 35 cookies now, how many cookies do they have all together?
Equation with symbol:
Equation solved:
Symbol represents:
x-23=35
58-23=35
x=58
Tom has 42 toy cars. For his birthday he gets some more as gifts. Now he has 70 cars. How many toy cars did Tom earn for his birthday?
Equation with symbol:
Equation solved:
Symbol represents:
42+x=70
42+28=70
x=28
2, 5, 7
___ + ___ = ___
___ + ___ = ___
___ - ___ = ___
___ - ___ = ___
2 + 5 = 7
5 + 2 = 7
7 - 2 = 5
7 - 5 = 2
13 - 7 = 6
*do both inverse operation equations
7 + 6 = 13
6 + 7 = 13
Dr. Prout has some blue fish in the tank and 51 yellow fish. If she has 76 fish in all, how many blue fish does she have?
Equation with symbol:
Equation solved:
Symbol represents:
x+51=76
25+51=76
x=25
Mrs. Mumm bought 84 pencils. She passed out some of them. Now she has 37. How many pencils did she pass out?
Equation with a symbol:
Equation solved:
Symbol represents:
84-x=37
84-47=37
x=47
4, 7, 11
___ + ___ = ___
___ + ___ = ___
___ - ___ = ___
___ - ___ = ___
4 + 7 = 11
7 + 4 = 11
11 - 4 = 7
11 - 7 - 4
15 + 7 = 22
*do both inverse operation equations
22 - 15 = 7
22 - 7 = 15
George has some baseball cards. Frank gave him 38 more baseball cards. Now he has 98 cards. How many baseball cards did George have to start with?
Equation with symbol:
Equation solved:
Symbol represents:
x+38=98
60+38=98
x=60
Emily had 14 silly bands. Her friend gave her some more silly bands. Now she has 26 silly bands. How many silly bands did her friend give her?
Equation with a symbol:
Equation solved:
Symbol represents:
14+x=26
14+12=26
x=12
15, 8, 23
___ + ___ = ___
___ + ___ = ___
___ - ___ = ___
___ - ___ = ___
15 + 8 = 23
8 + 15 = 23
23 - 8 = 15
23 - 15 = 8
30 - 12 = 18
*do both inverse operation equations
18 + 12 = 30
Jordan has 57 toy cars. Dina has 23 toy cars. How many MORE toy cars does Jordan have than Dina?
Equation with symbol:
Equation solved:
Symbol represents:
57-23=x
57-23=34
x=34
Kim scored 30 points in the first quarter of her basketball game. She scored some more points in the second quarter. If Kim scored 47 points in both quarters, how many points did Kim score in the second quarter?
Equation with a symbol:
Equation solved:
Symbol represents:
30+17=47
x=17
25, 19, 6
___ + ___ = ___
___ + ___ = ___
___ - ___ = ___
___ - ___ = ___
6 + 19 = 25
19 + 6 = 25
25 - 6 = 19
25 - 19 = 6
45 + 28 = 73
*do both inverse operation equations
73 - 45 = 28
73 - 28 = 45
Mrs. Strouf has some skittles. She eats 57 of them. If she has 28 left, how many skittles did Mrs. Strouf start with?
Equation with symbol:
Equation solved:
Symbol represents:
59-31=28
x=59
Ms. McBride has 36 marbles. She buys some more and now she has 68 marbles. How many marbles did Ms. McBride buy?
Equation with a symbol:
Equation solved:
Symbol represents:
36+32=68
x=32
46, 29, 17
___ + ___ = ___
___ + ___ = ___
___ - ___ = ___
___ - ___ = ___
29 + 17 = 46
17 + 29 = 46
46 - 17 = 29
46 - 29 = 17
80 - 47 = 33
*do both inverse operation equations
33 + 47 = 80