Week 18: Lesson 1

Week 18: Lesson 1

ALL students will do this lesson on WEDNESDAY.

Make sure you watch the video so you will know how to solve the problems!!

Multiple Choice

Which of these is subtraction?

• The quotient of 25 and 5

• 25 decreased by 5

• Twice 25 and 5

• The product of 25 and 5

25 decreased by 5 uses subtraction because "decreased" means something became less or smaller

Multiple Choice

Which of these is addition?

• The difference between 3.8 and 1.8

• The product of 3.8 and 1.8

• The sum of 3.8 and 1.8

• Triple 3.8

"Sum" means addition

"difference" means subtraction

"product" means multiplication

"triple" would mean 3 times as much, so that's multiplication

Multiple Choice

Which of these is NOT multiplication?

• The product of 5.8 and 2

• Twice 5.8

• 5.8 times 2

• 5.8 reduced by 2

"product" is the word used to describe the answer in a multiplication problem

the word "twice" means do something two TIMES, so that's multiplication

"reduced" means something became smaller or less, so that's subtraction

Multiple Choice

Which of these are division?

• The product of 18 and 3

• The quotient of 18 divided by 3

• 18 decreased by 3

• The total when 3 is taken from 18

The "product" means the answer to a multiplication problem; a "quotient" is the answer to a division problem; "decreased" means you have less, so that's using subtraction, the "total" is the answer to addition, and "taken" means you don't have it now, so that's subtraction.

Multiple Choice

the difference of 100 and a number w

• 100 + w

• 100 / (6 + w)

• 100 - w

• 100 / 6 + w

"difference" means subtraction

Multiple Choice

Write the phrase as an expression. "10 less than a number n"

• 10-n

• n-10

• n+10

• 10-n

The phrase "less than" switches the order, so the n has to come before -10.

Multiple Choice

What is the quotient of y and 5?

• y - 5

• y + 5

• y X 5

• y/5

Quotient means the answer to a division problem.

We use the fraction bar to show division when we are doing algebra.

Multiple Choice

Product of 4 and p

• 4/p

• 4p

• 12/4p

• 12/4x

The product is the answer to a multiplication problem

We do NOT use X to show multiplication in algebra. We just write the number and then the variable (the letter) with nothing in-between (there's an invisible multiplication sign in between the number and letter!)

Multiple Choice

Six less than a number k

• k - 6

• 6 + k

• 6/k

• 6 - k

Less means subtraction. The word "than" switches the order in the expression. So instead of it being 6 - k, they trade places and it becomes k - 6.

Multiple Choice

Write an expression to match the words:

the difference of ten and three

• 10 + 3

• 10 - 3

• 10 x 3

• 10÷3

"Difference" means subtraction so it has to be 10 - 3. There were no reversing words (than or from)

The end....thank you for your work!