Dividing by decimals Mr. Johnk 2015. Whatever you multiply your divisor by, you must also do to the dividend! The shortcut is to just move the decimal.

Slides:



Advertisements
Similar presentations
Dividing Decimals “Swingin’ Monkeys”
Advertisements

Division Algorithms By: Jessica Nastasi.
4-8 Example 2 Divide. Multiply to make the divisor a whole number.
Addition Subtraction Multiplication Division
. Dividing by a Whole Number
How do we divide decimals?
Decimal Division You must learn the rules. Dividing a decimal by a whole number 1.2 ÷ 2 Divisor = 2 Dividend = 1.2 Step 1: move the decimal in the dividend.
Dividing Decimals Find the quotient of 12 ÷ 4 Set it up quotient Dividend (in the box) Divisor (out of the box) Find the quotient of 156 ÷ 12 1.
Warm-up (on page ) Answer the following question in complete sentences. Think about multiplying. What is true about the product (answer)? How does it compare.
Decimal Division.
Dividing Decimals. Important Terminology Divisor-the number you are dividing Dividend-the number you are dividing by.
The Number System Dividing Decimals 1 © 2013 Meredith S. Moody.
Operations with Decimals. Adding and Subtracting Decimals.
Dividing Decimals by Whole Numbers
When dividing a decimal by a whole number, place the decimal point in the quotient directly above the decimal point in the dividend. Then divide as you.
L4-3 Notes: Dividing Decimals by Whole Numbers
 When dividing a decimal by a whole number, divide as with whole numbers. Then place the decimal in the quotient directly above its place in the dividend.
Decimal Division. To divide a decimal by a whole number move the decimal point straight up and then divide as usual.
Adding and Subtracting Decimals. Rules for adding or subtracting decimals: (1) Line up the numbers by the decimal point.
The strange story of: 37.5  1.25 Dividing by a Decimal Number.
DIVIDING WITH DECIMAL DIVISORS Get ready to get moving.
Dividing Decimals by Whole Numbers
Find ÷ Multiplying and Dividing Decimals COURSE 2 LESSON 1-3 Estimate ÷ ÷ 7, or 6 Check for Reasonableness.
Dividing Decimals TeacherTwins©2014. Warm Up
ADD & SUBTRACT MULTIPLY & DIVIDE Decimals. ADD & SUBTRACT DECIMALS Rewrite (problem) Move (decimals) Solve (problem)
Dividing Decimals by a Whole Number 3.6 ÷ 3.
Dividing with D ecimals Dividing a Decimal by a Decimal Rewrite the divisor as a whole number by multiplying by a power of 
Dividing a Decimal by a Decimal. Dividing Whole Numbers 12 ÷ 2 = 120 ÷ 20 = 1200 ÷ 200 = ÷ 2000 = Multiply both 12 and 2 by 10 Multiply.
Addition, Subtraction, Multiplication, Division by a whole number, and Division by a decimal.
Warm Up = = (-8.27) = – = – (-38.93) =
Dividing Rational Numbers Rational Numbers ~. Dividing Rational Numbers RULES: RULES: 1. When multiplying or dividing integers with the same signs, the.
7 th Grade Math Honors LESSON 7. Multiplying & Dividing Decimal Numbers - Estimation  Multiplying 1. Pretend that the decimals are not there and multiply.
By Mr. Johnk FRACTIONS TEST REVIEW. ORDER FROM GREATEST TO LEAST.
Converting Fractions to Decimals 1.Arrange the numerator as the dividend and the denominator as the divisor. 4 3 ) ) DIVISOR DIVIDEND NUMERATOR.
Decimal Review. Adding decimals Rules Line up the decimal points 2. Make whole numbers look like decimals.
Patterns in Decimal Division. MCC5.NBT.2 Explain patterns in the number of zeros of the product when multiplying a number by powers of 10, and explain.
Quick Guide to Adding, Subtracting, Multiplying, and Dividing Decimals
Divisor (out of the box)
Unit 0: Review Decimals and Fractions.
Addition Subtraction Multiplication Division
Addition Subtraction Multiplication Division
Dividing Decimals “Swingin’ Monkeys”
6.2.5 Multiplying Decimals Dividing Decimals
Divisor (out of the box)
Addition Subtraction Multiplication Division
Dividing Decimals “Swingin’ Monkeys”
Dividing Decimals “Swingin’ Monkeys”
Dividing Decimals by Whole Numbers
Dividing Decimals by Whole Numbers
Multiplying and Dividing Decimals
Dividing Decimals by Whole Numbers
Addition Subtraction Multiplication Division
#1 Dividing by a Whole Number
Think about multiplying. What is true about the product (answer)
Decimal Division.
Decimal Division.
Dividing Decimals “Swingin’ Monkeys”
Addition Subtraction Multiplication Division
Dividing Decimals “Swingin’ Monkeys”
Dividing Decimals TeacherTwins©2015.
Quotient: is the answer to dividing
Division with Remainders
Multiplying and Dividing Decimals by 10, 100, 1000
-First number goes in box Dividing Decimals
Dividing by a Decimal Number The strange story of: 37.5  1.25.
Dividing whole number by a decimal
Dividing Decimals “Swingin’ Monkeys”
Dividing by Decimals © 2007 M. Tallman.
Dividing Decimals “Swingin’ Monkeys”
Dividing Decimals.
Presentation transcript:

Dividing by decimals Mr. Johnk 2015

Whatever you multiply your divisor by, you must also do to the dividend! The shortcut is to just move the decimal the same number of places on each number! divisor dividend

Now just divide by 4! ÷ ● You multiplied by 10 so the decimal is now between the 2 and 4. Place the decimal straight up in the quotient

The answer got smaller! 525 ÷ 1.25 Should our answer get bigger or smaller? ● ● ● ● 0 0 Decimal out of sight-decimal to the right!

However many times you move the decimal to the right on the outside, is how many times you have to move it on the inside! How many places would you move the decimal in ÷ ? The answer is? 4 places on each number. You would need to annex a zero behind the 76325

The answer is 2 places! The 0.31 would become 31 and the would become ! How many places this time? ÷ 0.31