Solving Addition Equations

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Presentation transcript:

Solving Addition Equations Textbook page 62 IAN page 83

Solving Addition Equations Each side of the equation must be balanced. We balance an equation by doing the same thing to both sides of the equal sign.

Solving Addition Equations Example 1 Solving Addition Equations Solve each equation. Check your answers. (A) x + 62 = 93 Do the opposite - 62 - 62 Do the same thing to both sides of the equation. x = 31 31 + 62 = 93 To check your work, substitute in the value of x.

Solving Addition Equations Example 1 Solving Addition Equations Solve each equation. Check your answers. (B) 8.1 = 1.7 + y Do the opposite Do the same thing to both sides of the equation. - 1.7 - 1.7 6.4 = y 8.1 = 1.7 + 6.4 To check your work, substitute in the value of y.

Solving Addition Equations Example 2 Word Problem: Social Studies Dyersburg, Newton, and St. Thomas are located along Ventura Highway, as shown on the map. Find the distance d between Newton and Dyersburg. 25 = 6 + d -6 -6 19 = d

Solving Addition Equations Practice Problems 1. x + 54 = 90 2. 49 = 12 + y 3. n + 2.7 = 4.6 x = 36 y = 37 n = 1.9 4. 2.2 + t = 9.1 5. 31 = p + 13 6. c + 38 = 54 t = 6.9 p = 18 c = 16

Solving Addition Equations Practice Problems Lou, Michael, and Georgette live on Mulberry Street, as shown on the map. Lou lives 10 blocks from Georgette. Georgette lives 4 blocks from Michael. How many blocks does Michael live from Lou? 10 = 4 + b -4 -4 6 blocks