Vocabulary
A mathematical sentence showing two expressions that are equal
What is equation?
Use mental math: The solution to 8 + g = 15
What is g = 7?
Use mental math: The solution to 3 = 9 - n
What is n = 6?
Use mental math: The solution to 9g = 45
What is g = 5?
Use mental math: The solution to y/7 = 2
What is y = 14?
The value of a variable with a value that results in a true sentence
What is solution?
Solve y + 6 = 10
What is 4?
Solve f - 4 = 9
What is 13?
Solve 8d = 48
What is 6?
Solve 15 = x/3
What is 45?
Operations which undo each other
What is Inverse Operations?
Solve y + 1/2 = 3/4
What is 1/4?
Solve 13.2 = t − 4.4
What is 17.6?
Solve 2s = 34
What is 17?
Solve d/75 = 25
What is 1,875?
When you add the same number to each side of an equation and the two sides remain the equal
What is Addition Property of Equality?
Solve w + 62 = 90
What is w = 28?
Solve 25.3 = s + 6.2
What is s = 19.1?
Solve 13g = 156
What is 12?
Solve 54 = r/3
What is 162?
When you multiply each side of an equation by the same nonzero number, and the two sides remain equal
What is Multiplication Property of Equality?
Anna’s hair is 24 inches long. This is 12 inches longer than her sister’s. Write and solve an addition equation to find the length of her sister’s hair.
What is n + 12 = 24; n = 12 in?
Nico had 9 words correct on his weekly spelling test. This is 1 less than what he had correct the week before. Write and solve a subtraction equation to find the number of spelling words Nico had correct the week before.
What is w - 1 = 9; w = 10 words?
This year, James raised $95 for an animal shelter. This is 5 times the amount he saved. The equation 5x = 95 can be used to find last year’s fundraising amount. Find last year’s fundraising amount.
What is $19?
The height reached by Amal’s rocket was one fourth the height reached by Min’s rocket. Amal’s rocket reached a height of 15 meters. Which equation could be used to find the height reached by Min’s rocket?
What is m/4 = 15?