Numeration-Problem Solving Read the problem more than once Identify the important and junk information Decide which mathematical operation needed to solve.

Slides:



Advertisements
Similar presentations
Divisibility and Mental Math
Advertisements

8-3: Solving Systems of Equations using Elimination
An introduction to Problem Solving Math 110 Iris Yang.
Solving Fraction Equations by Multiplying
3.3 Solving Multi-Step Equations. A multi-step equation requires more than two steps to solve. To solve a multi-step equation: you may have to simplify.
Divisibility Rules Page 10 in textbook.
division algorithm Before we study divisibility, we must remember the division algorithm. r dividend = (divisor ⋅ quotient) + remainder.
11 and 6 3 and 9 2, 5, 10 and 4, 8 Divisibility Rules.
Divisibility Rules and Mental Math
Objective: Learn to test for divisibility.
I am a two-digit number I am between 10 and 20 I am a multiple of 3
I am greater than my square. The sum of numerator and denominator is 5 What fraction am I?
DIVISIBILITY RULES.
Ways to Check for Divisibility Dividing By 1 All numbers are divisible by 1.
Divisibility Rules and Finding Factors
Divisibility Test For Different Numbers
Problem Solving. What is Problem Solving???? Well you could find several definitions of problem solving, but we only have to concentrate in the fact that.
Ways to Check for Divisibility Dividing By 1 All numbers are divisible by 1.
Including Solving polynomial equations. Exercise 4A.
Dividing Polynomials SYNTHETIC DIVISION AND LONG DIVISION METHODS.
Divide Polynomials using Long Division and Synthetic Division.
Divisibility Rules: What are they? Rules to help you determine if numbers are divisible by other numbers. Divisible – if a number can be divided by another.
Making a decision … Now that you know 3 ways to solve a system of equations, how to choose which method to use when solving systems of equations.
Divisibility and Mental Math. Vocabulary A number is divisible by another number if it can be divided into and result in a remainder of is divisible.
2, 3, 5, 9, 10 “Divisible BY” What does it mean?
Factor A factor of an integer is any integer that divides the given integer with no remainder.
3x + 2 6x 3 - 5x 2 – 12x – 4 DMSBDMSB 2x 2 6x 3 + 4x 2 -9x 2 – 12x – 3x -9x 2 – 6x – 4 – 2 – 6x– 4 0 Check: (3x + 2)(2x 2 – 3x – 2) = 6x 3 – 9x 2 – 6x.
Divisibility Rules. Divisibility What is Divisibility ? Divisibility means that after dividing, there will be NO remainder.
Divisibility Rules. What Are Divisibility Rules? They are a quick way to tell if one number can be completely divided into another without a remainder.
Divisibility and Mental Math Lesson 3-1. Vocabulary A number is divisible by another number if it can be divided into and result in a remainder of 0.
My Book of Divisibility. THE 2’s Example: 30, 42, 24, 76, 98, Must be an even number Number must end in a 0, 2, 4, 6, or 8.
Math Strategies For the SSAT. Review – general strategies Remember all the answers are there Use process of elimination Guess only if you can eliminate.
Fractions.
DIVISIBILITY RULES. A number is divisible by: If the number ends in 0 the number is also divisible by 2 and 3 the sum of the number's digits.
3x + 2 6x3 - 5x2 – 12x – 4 2x2 – 3x – 2 6x3 + 4x2 -9x2 – 12x -9x2 – 6x
Strategies Number – addition, subtraction, multiplication and division
Solving Systems of Equations using Elimination
3 Chapter Numeration Systems and Whole Number Operations
Divisibility Rules.
Solve more difficult number problems mentally
Divisibility and Mental Math
Review Basic Math Divisibility tests Prime and Composite Numbers
Factors and Simplest Forms
Divisibility and Mental Math
3-2: Solving Systems of Equations using Elimination
3.3: Solving Systems of Equations using Elimination
Divisibility Rules.
Divisibility and Mental Math
Divisibility Rules.
Divisibility Rules.
3-2: Solving Systems of Equations using Elimination
Divisibility Rules.
Divisibility Rules!.
Divisibility Rules.
Divisibility Rules.
Divisibility Rules.
Section 4.1 Divisibility and Factors
3-2: Solving Systems of Equations using Elimination
Divisibility Rules.
Objective: Learn to test for divisibility.
Divisibility Rules.
3-2: Solving Systems of Equations using Elimination
Solving Systems of Equations using Elimination
Rules of Divisibility A number is said to be “divisible” by a number if you can divide it by that number and get no remainder.
To Start: 15 Points Solve the following: 21,672 ÷ 3 = 45,225 ÷ 5 = 210,060 ÷ 10 = 7,224 9,045 21,006.
Use elimination to get rid of a1 and solve for d.
Reducing (Simplifying) Fractions
§4.2, Number Bases in Positional Systems
Divisibility A number is divisible by another number if the quotient is a whole number with no remainder.
Unit 1: Number System Fluency
Presentation transcript:

Numeration-Problem Solving Read the problem more than once Identify the important and junk information Decide which mathematical operation needed to solve the problem Organize your data Apply the operation to the data

Numeration I am a number less than 50. When divided by 5, by remainder is 4. The sum of my digits is 11. What number am I?

Numeration Identify important information Number is less than 50 When divided by 5, the remainder is 4 The sum of the digits is 11

Numeration Which operation is needed to solve the problem? Division Addition (Sum) Logical Thinking

Numeration Organize your data My number is less than 50 The number must be between 1-49 The number must be a 2-digit number in order to get a sum of 11 Therefore 1-9 is eliminated The numbers must be between 10-49

Numeration Which two numbers between 10 and 49 have a sum of 11? Use Guess and Check Use the working backwards strategy to solve the problem Once you have found numbers whose sum is 11, divide it by 5 to check for a remainder of 4

Numeration Using guess and check and the working backwards strategy you found that the number is = divided by 5 = 5 remainder 4 Did you solve the problem?