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Sofea has 5 apples, and Madison gives (+) her 6 more.
What operation is used in this work problem?
Addition, the keyword is give
Lily has 10 cars, Andrew takes (-) 2 of them away, how many cars does she have left?
What operation will be used in this problem?
Subtraction, key word is takes and have left.
Fred has 29 blocks, Noah gives (+) him 8 more, how many blocks does Fred have altogether (+)?
What operation is used here?
Addition
Keyword: gives, altogether
Shelby had 6 marbles, she added (+) 4 more(+) to her collection. How many does she have now?
What operation is being used here?
Addition.
Key words: added, more.
What operation is this symbol used for?
+
Addition
Other words: plus, add, find the sum
If Jacob had 50 grapes, and Madison ate(-) 10 of them, how many grapes are left (-)?
What operation is used here?
Subtraction.
Key words: in this case-ate, or "how many are left?"
Michael had 6 cookies, but he ate (-) 3 of them, how many cookies are left (-)?
What operation will be used here?
Subtraction.
Key words: ate, and how many are left
Makaiah had 18 pieces of candy, his teacher gave him 8 more, how many pieces does he have now?
What operation will be used here?
Addition.
Key word is gave.
What is the difference (-) of these two numbers: 35-20=?
What operation will be used here?
Subtraction
Key word: difference
What operation is this symbol used for?
-
Subtraction.
Other words, minus, deduct, difference.
Shelby has 28 colored pencils in her backpack; Jacob gives (+) her 5 more, how many does she altogether (+)?
what operation would you use?
Addition, keywords are gives and altogether indicated a new total that was larger.
Sofea's pizza restaurant sold 5 pizzas every day (x) for 7 days. How many pizzas were sold in all (x) 7 days?
What operation should be used?
Multiplication.
key words: 5 pizzas very day, all 7 days.
We have a measurement per day, and we need a total by the end of a period of time, in this case, 7 days.
Fred, Andrew, and Makaiah have 12 crayons all together.
If the crayons are equally divided, how many will each person get?
What operations is used here?
Division.
Keywords: equally divided
If Lily has 18 pencils in one package and is given 2 more packages of pencils with 18 in each one, (x) how many will she have in all 3 packages?
What operation is used
Multiplication.
Key words: in each one, and asking for a total amount
What operation are these symbols used for?
x or ·
Multiplication.
Other words: repeated addition, times.
Noah was at the beach for five days and found 6 seashells each day (x). How many seashells did he find overall (x)?
What operation would be used?
Multiplication and keywords are each day.
Andrew has 30 blocks, he wants to divide (÷) them into 5 groups for all of his friends. How many will be in each group (÷)?
What operation is used here?
Division.
Key words: divide, each group
Michael has 25 stickers, he wants to split (÷) them into groups (÷) of his 5 friends.
What operation will be used here?
Division, the keyword is split, and groups.
Sofea is buying 3 packs of markers, each pack (x) has 6 markers, how many markers will she buy altogether (x)?
What operation is used here?
Multiplication, keywords are each pack, and all together.
What operation is this symbol used for?
÷ or /
Division
Other words, divide, put into groups
What operation is being shown here?
3 groups of 4
············
↓
···· ···· ····
Division. The only keyword here is groups of. Since we are dividing the total into 3 groups, we are using division.
Madison was given the problem: Find the sum (+) of the two numbers 24 and 46. To solve this problem, she did 24+46 and used addition.
Did she use the right operation?
Yes. Addition was the correct operation to use. The sum in the answer of an addition problem.
If Shelby has 9 pieces of candy, and Jacob gives (+) her 4 more but then takes away (-) 2, how many does he have?
What 2 operations are being used here?
Addition, then subtraction.
Our keywords are gives, and takes away.
Fred has 20 markers and wants to give his 4 friends each (÷) some markers. How many will each one get?
What operation will be used?
Division. The keywords in this problem were give, and each. Each decides that they will be divided into groups.
Name the 4 operations.
Addition, subtraction, multiplication, and division.