Solving Basic Equations and Operations

Mrs. Gorsky introduces the concept of making true equations, where both sides of an equation must have the same value. She demonstrates solving equations using various strategies, including counting on, number strings, and open number lines. The lesson progresses from basic to complex examples, encouraging students to practice at home.

What is the main goal when creating true equations?

• To make both sides of the equation look similar

• To ensure both sides of the equation have the same value

• To use as many numbers as possible

• To find the largest number possible

In the equation 3 + 6 = 9, what is the missing number if the equation is 15 - ___ = 9?

• 5

• 6

• 7

• 8

What strategy can be used if you don't know the basic facts to solve an equation?

• Multiplying

• Counting on

• Guessing

• Dividing

If 9 + ___ = 16, what is the missing number?

• 8

• 7

• 6

• 5

What is the result of 8 + 8?

• 17

• 16

• 15

• 14

What is the first step in solving 25 + ___ = 6 + 20 + 4 using number strings?

• Add 6 and 4 to make 10

• Add 20 and 4 to make 24

• Subtract 6 from 20

• Multiply 6 by 4

What is the missing number in the equation 25 + ___ = 30?

• 4

• 7

• 5

• 6

In the equation 43 + 10 + 20 = 95 - ___, what is the missing number?

• 22

• 20

• 21

• 23

What strategy is used to solve 95 - ___ = 73?

• Multiplying

• Dividing

• Counting down

• Counting on

What is the purpose of using an open number line in solving equations?

• To add more numbers

• To visualize the counting process

• To subtract numbers

• To make the equation more complex