Lesson 17.  Addends- The numbers that are being added together.  Reasonable- Does it make sense?

Slides:

Advertisements

Similar presentations

To the tens, hundreds and thousands

Advertisements

Estimate sums by rounding and apply to solve measurement word problems

Rounding Review Copyright © 2009 Kelly Mott.

Estimating Sums and Differences of Whole Numbers.

Whole Numbers How do we use whole numbers to solve real-life problems?

2-4 Round 3,531 to the nearest hundred.

Rounding Numbers to the 100 Thousands Place

Adding Partial Sums.

Partial Sums An Addition Algorithm.

Estimating Sums to the Nearest 10 and 100

$100 $200 $300 $400 $100 $200 $300 $400 $300 $200 $100 Estimate with pictures Round to nearest hundred Round to nearest thousand Add / subtract & estimate.

Rounding Numbers Lesson 29.

Fourth Grade Place Value Routines.

2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt Money Rounding & Estimation.

Rounding of Numbers Up to Hundred Millions

EXAMPLE 1 Biking The map shows biking times for a trail. Estimating Sums and Differences.

Chapter 1 Addition and Subtraction within 1, Edition.

Mental Learning Objective I know my number bonds up to 20.

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.

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

Rounding Whole Numbers Rounding Decimals Whole Number Estimation Decimal Estimation * Click the star on the desired box first and then click the box itself.

$100 $200 $300 $400 $100 $200 $300 $400 $300 $200 $100 Multiply by 1 digit numbers Multiply & estimate results Multiply by 2 digit numbers Multiply.

Lesson 10-1: Adding Groups of 10

Adding Groups of Ten. ____ tens + ____ tens = ____ tens ____ + ____ = ____.

Adding Two and Three Digit Numbers

Round Off!! Test Your Rounding Skills. Category 1 for 1 Question: Nearest Tens Category 1 Nearest Tens.

Rounding To the nearest 100. Rounding In this lesson we are looking at rounding numbers to the nearest 100. Rounding Rounding is used to approximate or.

LO: to round to the nearest 10 Which ten is the following number nearest to?

Review Mathematics Skills Lesson R.1 Rounding.  Place Value – The name given to the location a digit occupies in a number. This location identifies the.

Unit 2 Lesson 9 Part 2: Estimating Sums to the Nearest 100 Copyright © 2010 Kelly Mott.

Estimating Sums to the Nearest 10 and 100 Copyright © 2013 Kelly Mott.

Rounding To the nearest 10,100,1000. Round to the nearest 10 T 27 UH 27 tens units 27 1) Draw a line to the right of the tens 2) Is the number on the.

Math symbols Rounding 2 digit numbers to the nearest tens Rounding 3 digit numbers to the nearest tens Rounding 3 digit numbers to the nearest hundreds.

Rounding to the Nearest Ten & Hundred MAFS.3.NBT.1.1.

Rounding Numbers Lesson 1.9.

Rounding Tens and Hundreds

Lesson 9 Rounding to any digit.

Rounding Extra practice.

Number Sense Review Game

ROUNDING 54 ______ 26 ______ 39 ______ 13 ______ 99 ______ 07 ______

36 LO: to round to the nearest 10

Unit 3, Lesson 15 Round and Estimate with Decimals

Objective - To round whole numbers.

What is 423 rounded to the nearest hundred?

4 3 9 H T U What is the most significant figure in

Rounding numbers to any thousand place value

Round to the nearest 100.

Rounding Numbers.

Rounding Review Tens and Hundreds

Rounding Review Tens and Hundreds

Rounding Numbers Name: ___________________________________

Adding Greater Numbers

Rounding Review Tens and Hundreds

Round off 38 to the nearest ten.

Rounding off (Outcome).

Adding 8 to a given addend

Adding 1 to a given addend __ + 1 =.

Rounding to the Nearest Ten & Hundred

Presentation transcript:

Lesson 17

 Addends- The numbers that are being added together.  Reasonable- Does it make sense?

 First we find the nearest hundred.  362 ~ ~200  Then we round to the nearest ten.  362~ ~ 160  Then we round to the closest 50.  360~ ~150

= 600 (Rounding to nearest hundred) = 520 (Rounding to nearest ten) = 500 (Rounding to nearest 50) Which method of rounding will give the closest sum? Talk to your neighbor about your answer.

 (A) (B) (C)  Round to the nearest hundred  Round to the nearest ten  Round to the nearest 50  What did you realize about these numbers?  Find the exact value of the sums.

  Round to the nearest hundred  Round to the nearest ten  Round to the nearest 50  What did you realize about these numbers?  Find the exact value of the sums.