Equations with Addition and Subtraction—Let's Practise
Basics on the topic Equations with Addition and Subtraction—Let's Practise
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Transcript Equations with Addition and Subtraction—Let's Practise
Razzi says get these items ready because today we're going to practice Equations with Addition and Subtraction. It's time to begin! Solve the following TWO STEP word problem by writing an equation. Ash has sixtythree varieties of plants in their garden. There are twentyeight varieties of tomatoes and fourteen varieties of apples. The rest of the varieties are peppers. How many different varieties of peppers are there? Pause the video to work on the problem and press play when you are ready to see the solution! The equation is twentyeight plus fourteen plus
to represent the peppers equals sixtythree.
Next, add twentyeight and fourteen to get fortytwo.
Finally, subtract fortytwo from sixtythree to get twentyone.
Did you also get twentyone?
Let's try one more!
Solve the following TWO STEP word problem by writing an equation.
Samir is saving money for a new bike that costs two hundred and seventynine pounds. He already has fortyfive pounds saved and is given ninetyone pounds for his birthday. How much more money does Samir need to save?
Pause the video to work on the problem and press play when you are ready to see the solution!
The equation is fortyfive plus ninetyone plus
Equations with Addition and Subtraction—Let's Practise exercise

How many sunflowers are there?
HintsSet up the equation like this:
 45 + 12 + S = 83
Here is the next step to find the value of S.
 45 + 12 = 57
Here is the next step to find the value of S.
 57 + S = 83
Here is the next step to find the value of S.
 S = 83  57
SolutionHere are the steps for solving the word problem:
 45 + 12 + S = 83
 45 + 12 = 57
 57 + S = 83
 S = 83  57
 S = 26
Marsha collected 26 sunflowers on the walk.

Penguins at the aquarium.
HintsSet up the equation like this:
 23 + 13 + P = 67
Here is the next step to find the value of P.
 23 + 13 = 36
Here is the next step to find the value of P.
 36 + P = 67
Here is the next step to find the value of P.
 P = 67  36
SolutionHere are the steps for solving the word problem:
 23 + 13 + P = 67
 23 + 13 = 36
 36 + P = 67
 P = 67  36
 P = 31
Elijah saw 31 penguins at the aquarium.

How much money does Mohammed need for a camera?
HintsSet up the equation:
amount saved + amount given for his birthday + amount Mohammed needs to save = total cost
The first step for finding the value of S is to add the amount saved and the amount given for his birthday.
The next step is to subtract the sum of the amount saved and the amount given to Mohammed on his birthday from the total cost.
SolutionHere are the steps for solving the word problem:
 94 + 114 + S = 235
 93 + 114 = 208
 208 + S = 235
 S = 235  208
 S = 27
Mohammed needs to save 27 pounds.

Jamie needs to save money for drums.
HintsThe first step for finding the value of S, is to add the amount saved and the amount given on Jamie's birthday.
The next step is to subtract the sum of the amount saved and the amount given on Jamie's birthday from the total cost.
SolutionHere are the steps for solving the word problem:
 117 + 143 + S = 321
 117 + 143 = 260
 260 + S = 321
 S = 321  260
 S = 61
Jamie needs to save 61 pounds.

Write the equation.
HintsUse S for the amount Mia needs to save.
Here is how to write the equation:
amount saved + amount given for pocket money + amount Mia needs to save = total cost
SolutionThe addends are interchangeable so any order is correct.
This is how to write the equation.
 76 + 12 + S = 111
 76 + 12 = 88
 88 + S = 111
 111  88 = 23
 S = 23

How many cucumbers are left?
HintsThe first step for finding the value of C, is to add the number of strawberries and tomatoes.
The second step is to subtract the total amount from the combined amount of strawberries and tomatoes.
Once you've found out how many cucumbers there were to start with, subtract the amount of cucumbers eaten by the deer.
SolutionHere are the steps for solving the two part word problem:
 43 + 78 + C = 141
 43 + 78 = 121
 121 + C = 141
 C = 141  121
 C = 20
 20  16 = 4