= Magic Math (Checking)

Slides:



Advertisements
Similar presentations
& GUIDED QUESTIONS MATH VOCABULARY DAY 14. Table of ContentsDatePage 9/25/12 Math Vocabulary27 Guided Question28.
Advertisements

Addition and Subtraction
Maths - Subtracting. Subtracting is simple. It is the opposite of adding. For example: 3 – 2 =___.
Palmdale School District Mathematics Content Standards Grade 2 NUMBER SENSE Students: 2.1 understand and use the inverse relationship between addition.
Integer Operations. 1) What’s the rule for adding integers? *If both addends are Positive: - Add together and the sum is positive (Ex = 12) *If.
Lesson 2-2 Adding and Subtracting Rational Numbers.
Lesson 2.3 Properties = 15 4 x 5 = 20 addendSUM factorPRODUCT addend factor.
How can you prove that a number is even in math? I know 12 is even, but how can I prove it?
Adding and Subtracting Rational Numbers 2-2 Objective: Students will add and subtract integers and rational numbers. S. Calahan 2008.
1.2 ADDING AND SUBTRACTING INTEGERS I can find the sums and differences of integers by using a number line or using SSA/DSS.
Solving Two Step Equations August 19,2013 WELCOME! Math is used in everyday life activities consciously and unconsciously. Objective: The student will.
Solving Inequalities by adding or subtracting, checking the inequality & graphing it!! This is so easy you won’t even need one of these!!!
Properties are special qualities of something. Addition and multiplication have special qualities that help you solve problems mentally = MENTAL MATH!!
Inverse Operations 4 th and 5 th grade. Two operations are said to be Inverse to each other if one operation undoes the effect of the other operation.
Using Mental Math Subtraction. 2 This jacket costs $152. It is on sale for $17 off. Using mental math, how much will this jacket cost? $ $17 = ?
Reverse Subtraction Objectives:  do a subtract by adding  check your answer by adding.
Comparative Relational Thinking
Properties of Real Numbers Ms. Gonzales’ Math Class.
Special Triangles Review
Adding subtracting and dividing integers
36 x 2 = ? A) 36 B) 72 C) 48 D) 76.
Century High-School Tutoring Program
Adding, Subtracting, Multiplying, and Dividing Integers
Check for Understanding
Using Mental Math Subtraction.
Math & Exponents.
Solving Two- Step Equations
Properties of Real Numbers
5th Grade Math Vocab Operations (Terms 1-10).
Knowing your math operation terms
Lesson 3 & 4 Inverse Operations Mrs. Jennings Math Honors
Properties of Operations For Addition and Multiplication
5Th Class Maths Additon & Subtraction.
Solving Two- Step Equations
6.4 Adding and Subtracting Mixed Numbers
Compensation.
Complete the missing numbers using the inverse.
Finding rational numbers between rational numbers
Objective: Be able to add and subtract directed numbers.
Using Rules to Subtract Integers
6.4 Adding and Subtracting Mixed Numbers
Chapter 3-3 Solve Equations by Adding/Subtracting
Equations and Inequalities
= Magic Math (Inverse Operations)
Adding and Subtracting Decimals
Adding Mixed Numbers.
Adding and Subtracting Decimals
Chapter 5 – 8 Add and Subtract Unlike Fractions
10.5 Addition and Subtraction with unlike denominators
LONG MULTIPLICATION is just multiplying two numbers.
Multiplying By 3 Third Grade.
Learn to solve equations using addition and subtraction.
Adding and subtracting Fraction word problem
Adding subtracting polynomials using multiplication
Ratios introduction Start.
Algebra 1 Section 1.3.
Practice Problems ax2 + bx + c
Objective: Be able to add and subtract directed numbers.
Finding The Mean.
Adding 8 to a given addend
Variations word problems
Adding 1 to a given addend __ + 1 =.
Chapter 2-2 Adding Integers
Addition To 10 Let’s practice your addition facts with Mrs Ford.
1.3 Properties of Numbers.
Adding and Subtracting Mixed Numbers
2.6 Solving Equations Involving the Distributive property
Presentation transcript:

+ 3 1 4 8 2 9 6 = 10 7 5 - Magic Math (Checking) 10 7 5 - GLE 0106.3.2    Understand that addition and subtraction are inverse operations.

6 3 + 3 = 3 + 3 = 6 Let’s start with something easy! Now, let’s learn some new words. 3 + 3 = 6 The numbers you are adding are called addends. The answer is called the sum.

3 + 3 = 6 to , 6 – 3 = 3 You can check a Math problem to see if your answer is correct. 3 + 3 = 6 to , Subtract one of the addends from the sum. The answer should be the other addend. If not, try again. 6 – 3 = 3

Try this: 14 7 + 7 = Now let’s it! 14 – 7 = 7 CORRECT!

Now, try these: Now, let’s them. 6 + 6 = 4 + 4 = 8 + 8 = 5 + 5 = 2 + 2 = 9 + 9 = Now, let’s them.

12 - 6 = 8 - 4 = 16 - 8 = 10 - 5 = 18 - 9 = 4 - 2 =

Are you correct? WAY 2 Go! 6 + 6 = 12 4 + 4 = 8 8 + 8 = 16 5 + 5 = 10 4 + 4 = 8 8 + 8 = 16 5 + 5 = 10 2 + 2 = 4 9 + 9 = 18 WAY 2 Go!