One Step Equations
a + 5 = 12
7
6f - 3 = 9
2
Beau bought 5 identical pencils. The total cost was $10. How much did each pencil cost?
(Variable: k)
$2
Layla bought 4 notebooks and a $6 pen. Altogether, she spent $26. How much did each notebook cost?
(Variable: p)
5 dollars
What if there is an addition problem?
OSE: 9 + u = 17
TSE: 72 + 9v = 108
You subtract and divide both sides.
9 - b = 6
12 + 7g = 47
5
Ma'rilee had some apples. After giving 3 to her friend, she had 7 left. How many apples did she have at first?
(Variable: l)
10 apples
Morgan had some candies. He gave 7 to his friend and then had 15 left. How many candies did he have at first?
(Variable: q)
22 candies
What if there is a subtraction problem?
OSE: w - 6 = 1
TSE: 70x - 54 = 156
You add and divide both sides.
4c = 52
13
9h + 7 = 52
5
A box already has 6 toys inside. When Finley adds some more toys, there are now 10 toys in total. How many toys did Finley add?
(Variable: m)
4 toys
A school bought some packs of markers. Each pack costs $5, and they also paid a $10 shipping fee. The total cost was $35. How many packs did they buy?
(Variable: r)
5 packs of markers
What if there's an addition problem and with fractions? (TSE ONLY)
y/8 + 7 = 87
You subtract and multiply both sides by the denominator.
d ÷ 6 = 13
78
i/12 + 7 = 9
24
A baker shared 24 muffins equally among some friends. Each friend got 6 muffins. How many friends were there?
(Variable: n)
4 friends
A ribbon is cut into pieces. The length of each piece is s/3 meters. After adding 4 meters more, the total length is 10 meters. How long was each piece originally?
18 meters long
What if there's an subtraction problem and with fractions? (TSE ONLY)
z/6 - 3 = 3
You add and multiply both sides by the denominator.
153e = 51
3
31 - j/9 = 28
27
A factory packs boxes with 12 cans of soup each. If the factory shipped a total of 180 cans, how many boxes were shipped?
(Variable: o)
15 boxes
A tank contains some water. After removing t/4 liters, there are 7 liters left. If the tank originally had 19 liters, how much water was removed?
48 liters
What are the letters called in OSE/TSE?
Variables