Mathematics
Grade 3
15 min
Multiplication facts up to 10: true or false?
Multiplication facts up to 10: true or false?
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1
Introduction & Learning Objectives
Learning Objectives
Identify the factors and product in a multiplication equation.
Evaluate a given multiplication equation up to 10 x 10 to determine if it is true.
Evaluate a given multiplication equation up to 10 x 10 to determine if it is false.
Calculate the correct product for a false multiplication equation.
Use known multiplication facts and strategies (like skip counting or drawing arrays) to verify their answers.
Explain their reasoning for why a multiplication fact is true or false.
A robot chef is making cookies, but its computer has a glitch! It thinks 4 batches of 6 cookies is 20 cookies. Is the robot right? 🤖🍪
In this lesson, you will become a 'Math Detective' who checks multiplication facts to see if they are correct (true) or incorrect (false)....
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Key Concepts & Vocabulary
TermDefinitionExample
MultiplicationA way to find the total number of items in equal-sized groups. It's like repeated addition.3 x 4 is the same as 4 + 4 + 4, which equals 12.
FactorThe numbers that are being multiplied together in a multiplication problem.In the equation 5 x 6 = 30, the numbers 5 and 6 are the factors.
ProductThe answer to a multiplication problem.In the equation 5 x 6 = 30, the number 30 is the product.
EquationA math sentence that uses an equals sign (=) to show that two things have the same value.7 x 2 = 14 is an equation.
TrueMeans that a statement or equation is correct.The equation 2 x 10 = 20 is true because 2 groups of 10 really is 20.
FalseMeans that a statement or equation is incorrect.The equation 2 x 10 = 21 is false because 2 groups of 10 is 20, not 21....
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Core Formulas
The Zero Property of Multiplication
a \times 0 = 0
Any number multiplied by zero always equals zero. If you see an equation like 9 x 0 = 9, you know it's false.
The Identity Property of Multiplication
a \times 1 = a
Any number multiplied by one is always that same number. If you see 7 x 1 = 1, you know it's false.
The Commutative Property of Multiplication
a \times b = b \times a
You can switch the order of the factors and the product will stay the same. This helps you check facts you know in a different order (e.g., if you know 3 x 8 = 24, you also know 8 x 3 = 24).
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Challenging
Leo says, "If I multiply an even number by any other whole number, the answer is always even." Which true multiplication fact below is the best example to support Leo's statement?
A.3 x 5 = 15
B.7 x 1 = 7
C.4 x 7 = 28
D.5 x 5 = 25
Challenging
Maria believes that if you multiply any number from 1 to 10 by 10, the answer will always have a '1' in it. Which true fact proves Maria's belief is FALSE?
A.1 x 10 = 10
B.The belief is always true.
C.10 x 1 = 10
D.5 x 10 = 50
Challenging
A secret code is a true multiplication fact (using two numbers 10 or under) where the product is between 30 and 40. Which of these statements could be a true secret code?
A.4 x 7 = 28
B.6 x 6 = 36
C.5 x 8 = 40
D.7 x 5 = 45
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