iM2 #17 Add Subtract Equations #2

Front

Solve the equation: 20.5 = x + 4

Back

x = 16.5

Front

Which choice models this situation? Taylor has read 125 pages in a book. The book has a total of 262 pages. How many pages does she have left to read to finish the book?

Back

p + 125 = 262

Front

Solve the equation: x - 3 = -12

Back

x = -9

Front

Which choice models this situation? Jack needed new pencils for school today. He took 6 pencils from a new box of pencils. If there are 18 pencils left in the box, how many pencils were in the brand new box?

Back

p - 6 = 18

Front

Solve the equation: x + 14.2 = 3.871

Back

x = -10.329

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions.

Front

What does it mean to solve an equation?

Back

To solve an equation means to find the value of the variable that makes the equation true.

Front

What is a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value in an equation.

Front

What is the purpose of isolating the variable in an equation?

Back

Isolating the variable helps to find its value by getting it alone on one side of the equation.

Front

What is the inverse operation of addition?

Back

The inverse operation of addition is subtraction.