Rounding numbers ©Mathematics Education Centre, Loughborough University.

Slides:

Advertisements

Similar presentations

Chapter 3 L3-4 Notes: Estimating Sums & Differences.

Advertisements

Estimating Sums and Differences. To round, examine the digit to the right of the digit being rounded. 1.If this digit is greater than or equal to 5, add.

Divisibility Rules Page 10 in textbook.

Rounding Numbers Part 1 © T Madas.

Calculating percentages of amounts no calculator ©Mathematics Education Centre, Loughborough University.

6-1 Percent Percent: a ratio that compares a number to 100

ROUNDING DECIMALS.

How to round a number with two decimal places to the nearest tenth For more maths help & free games related to this, visit:

How to Round Whole Numbers

Rounding off numbers 10 thousands thousands hundreds 1/ /100

Rounding Off Decimals.

Place Value & Rounding Review. Place Value For the number 2, : The 2 is in the ___ place. The 6 is in the ___ place. The 4 is in the ___ place.

How to Round a Number to the Nearest Tenth (1 Decimal Place)

L E S S O N 13.5 Multiplying Decimals 0.7

Calculating VAT no calculator 17.5% ©Mathematics Education Centre, Loughborough University.

Multiply Decimals 1.Multiply as with whole numbers. 2.Count the total numbers in decimal place value for both factors 3.Place as many numbers of your FINAL.

Dividing Decimals by Whole Numbers

L4-3 Notes: Dividing Decimals by Whole Numbers

© Hamilton Trust Keeping Up Term 3 Week 1 Day 1 Objective: Round whole numbers to the nearest 10, 100 or 1000.

Simplifying fractions ©Mathematics Education Centre, Loughborough University.

2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Comparing decimals Adding decimals.

Lesson 8: The Key to Rounding Money

Objective Students will be able to estimate sums and differences (3-5).

10’s 100’s and 1,000 th ’s place!. Rounding makes numbers that are easier to work with in your head. Rounded numbers are only approximate. An exact answer.

SIGNIFICANT FIGURES AND DECIMAL PLACES

Rounding To round off to a decimal: 1.Check how many decimal places you need to round the answer to. a.The question may ask for 1, 2 etc decimal places.

Rounding (Decimal Places) Round each number to the given number of decimal places.

WALT- use a number line to help round numbers to the nearest whole number to the nearest whole number to the nearest whole number.

Numbers Rounding & Decimals Pick 5 from the list.

Estimating Sums and Differences Rounding Clustering Front-end-estimating.

© Hamilton Trust Keeping Up Term 3 Week 1 Day 2 Objective: Round decimals to the nearest whole number.

Rounding- Decimal Places and Significant Figures.

Rounding Off Decimals January 8,2016.

How to Round a Number to the Nearest Tenth (1 Decimal Place)

Lesson 33Equivalent FractionsPage 235 Comparing Decimals Rounding Decimals.

Solving Equations ©Mathematics Education Centre, Loughborough University.

R ounding Nearest 10 Nearest decimal place The nearest whole number Correct to 2 dps Nearest 1000.

vms Year 8 Mathematics Rounding.

Rounding Decimals.

Rounding Decimals.

Fractions and decimals review

Starter Questions 39 x 30 28o.

Unit 3, Lesson 15 Round and Estimate with Decimals

Objective - To round whole numbers.

Estimation : Rounding When rounding numbers which are exactly in the middle, the convention is to round up rounded to the nearest 10 is Numbers.

Round to the nearest 100.

Rounding Learning Objectives: Able to round to the nearest 10, 100

Rounding Review Tens and Hundreds

Rounding Review Tens and Hundreds

Dividing Decimals by Whole Numbers

We normally abbreviate this to ‘nearest 10’

Objective - To round decimals to a specified place value.

Rounding Review Tens and Hundreds

Dividing Decimals.

Multiplication of Decimals

Decimals to Percentages

Comparing and Ordering Decimals

Rounding Learning Objectives: Able to round to the nearest 10, 100

©Mathematics Education Centre, Loughborough University

©Mathematics Education Centre, Loughborough University

Rounding – to the nearest 10

Practice Rounding to the nearest… © T Madas.

L E S S O N 13.5 Multiplying Decimals 0.7

Visualising Percentages

Multiplying Decimals.

©Mathematics Education Centre, Loughborough University

Presentation transcript:

Rounding numbers ©Mathematics Education Centre, Loughborough University

Strategy Use a viewer to remember which digit is to be rounded which digit is to be examined ©Mathematics Education Centre, Loughborough University

Use a viewer Place over number to be rounded Digit to be rounded Digit to be checked ©Mathematics Education Centre, Loughborough University

One decimal place Is this digit 5 or more ? Round up YES ©Mathematics Education Centre, Loughborough University

One decimal place Is this digit 5 or more ? Leave unchanged NO ©Mathematics Education Centre, Loughborough University

Two decimal places Is this digit 5 or more ? Round up YES ©Mathematics Education Centre, Loughborough University

Nearest whole number Is this digit 5 or more ? Round up YES 6 ©Mathematics Education Centre, Loughborough University