2 digit by 1 digit multiplication

How can you check your multiplication answer?

• By adding the factors together

• By dividing the product by one of the factors to see if you get the other factor.

• By multiplying the factors again

• By subtracting one factor from the product

What is 12 x 4?

• 40

• 44

• 48

• 52

What is a common mistake when multiplying 2-digit by 1-digit numbers?

• Forgetting to add the products from the tens and ones places.

• Multiplying the tens place by the ones place only.

• Adding the two-digit number to the one-digit number first.

• Ignoring the place value of the digits.

What is 89 x 5?

• 420

• 430

• 445

• 450

What is 34 x 7?

• 210

• 238

• 256

• 224

What is the second step in multiplying 34 by 7?

• Multiply 7 by the tens place (3) of 34 and add the result to the previous product.

• Multiply 34 by 7 directly without breaking it down.

• Add the digits of 34 together and then multiply by 7.

• Multiply 7 by the units place (4) of 34 and ignore the tens place.

How do you multiply 2-digit numbers by 1-digit numbers?

• Multiply the one-digit number by each digit of the two-digit number, starting from the right.

• Add the two-digit number to itself the number of times indicated by the one-digit number.

• Multiply the two-digit number by the one-digit number directly without any steps.

• Subtract the one-digit number from the two-digit number before multiplying.

What is the significance of zero in multiplication?

• Any number multiplied by zero equals zero, which is important in understanding multiplication.

• Zero is the only number that cannot be used in multiplication.

• Multiplying by zero always results in one.

• Zero is a placeholder in multiplication but does not affect the outcome.

What is an example of using the distributive property with 24 x 5?

• 24 x 5 = (20 + 4) x 5 = 20 x 5 + 4 x 5 = 120

• 24 x 5 = (10 + 14) x 5 = 10 x 5 + 14 x 5 = 120

• 24 x 5 = (30 - 6) x 5 = 30 x 5 - 6 x 5 = 120

• 24 x 5 = (25 - 1) x 5 = 25 x 5 - 1 x 5 = 120

What is the distributive property in multiplication?

• It states that a(b + c) = ab + ac, allowing us to break down complex problems.

• It states that a(b + c) = a + b + c, simplifying the expression.

• It states that a(b - c) = ab - ac, which is used for subtraction.

• It states that a(b * c) = ab + ac, which is used for addition.