MathematicsGrade 3en

⚖️ Equality and Unknown Numbers

Master the concept of equality and learn to solve simple equations with unknown numbers. This quiz covers understanding the equals sign, using strategies like trial-and-error and inverse operations to find missing numbers, and writing equations from real-world situations. **What you'll learn:** - Understand what the equals sign means and when equations are balanced - Solve for unknown numbers using various strategies - Use inverse operations to find missing values - Write and interpret equations from word problems

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Questions in this quiz

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Question 1
Which equation is TRUE?
Question 2
Is $4 + 5 = 9$ a true equation?
Question 3
What is the value of the unknown number in $? + 3 = 7$ ?
Question 4
Sarah has some stickers. She buys 5 more and now has 12 stickers. How many stickers did she start with?
Question 5
Is $10 - 4 = 6$ a true equation?
Question 6
What is the value of the unknown in $8 - ? = 3$ ?
Question 7
A toy costs 9 dollars. You have some money and need 4 more dollars to buy the toy. Which equation represents this?
Question 8
Is $3 + 6 = 7 + 2$ a true equation?
Question 9
What is the missing number in $? - 2 = 5$ ?
Question 10
A box has 15 crayons. Some are red and 6 are blue. How many are red?
Question 11
Is $5 + 5 = 2 + 8$ a true equation?
Question 12
Which equation has an unknown value of 6?
Question 13
Tom reads 8 pages of a book on Monday and 7 pages on Tuesday. His friend reads $?$ pages in two days and they read the same amount. What is $?$ ?
Question 14
What is the value of the unknown in $12 - ? = 4$ ?
Question 15
Is $6 + 4 = 5 + 5$ a true equation?
Question 16
A library has 20 books. Some are checked out and 8 are still on the shelf. How many books are checked out?
Question 17
Which number should replace the ? to make this equation true: $? + 7 = 14$ ?