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Solve and Write Addition and Subtraction Equations

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by

laura garcia

on 31 January 2013

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Transcript of Solve and Write Addition and Subtraction Equations

Equations Real World #3 Real World #2 Subtraction Equations!! Subtraction Property
of Equality!! check your understanding Example 1 Solve and Write Addition and Subtraction Equations 8 = x + 3 Before we begin Let's Review
Inverse Operations! Inverse Operations undo each other.
For example:
1. To Solve addition equations use Subtraction.
2. To Solve subtraction equations use
Addition! music Ariana and Jasmine have 245 downloaded songs. If
Ariana has132, how many belong to Jasmine?Write and solve an equation tofind how many songs belongto Jasmine? A male gorilla weighs 379 pounds on average. This is 181 pounds more than the weight of the average female gorilla. Write and solve an addition equation to find the weight of an average female gorilla. Animals Addition Equation!! EXAMPLE #1 X - 2 = 3 Real World Michael's height is 4 inches less
than Sandra's height. Michael is
58 inches tall. Write and solve a
subtraction equation to find
Sandra's height. You Try! Addition: 1. y + 7 = 10
2. x + 5 = 11
3. 9 = 2 + x
4. 7 = 4 + y
5. 7+ a = 9
Subtraction: 1. c - 1 = 8
2. f -1 = 5
3. 2 = e -1
4. 1 = g - 3
5. r - 3 = 1 Answers:
1) 3, 2) 6, 3) 7, 4) 7, 5) 2 Answers: 1) 9, 2) 6, 3) 3 4) 4 5) 4
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