8 ones plus 8 ones equal 16 ones. 16 is 1 ten and 6 ones. Record the 6 ones in the ones column between the equals sign. Because we have more tens, we.

Slides:

Advertisements

Similar presentations

Everyday Math and Algorithms A Look at the Steps in Completing the Focus Algorithms.

Advertisements

Column Method for Subtraction. Steps to success 1.Put the largest number on top. 2.Place the digits in the correct column. 3.Show the subtraction and.

Two approaches for Subtraction Regrouping Two-Digit Subtraction – Regrouping.

Laws of Exponents. Remember: Rule 1—Multiplying like bases  When multiplying like bases, keep the base and ADD the exponents.

 Two Rules: 1. To add numbers with the same sign, ADD the absolute values and the answer has the same sign as the original numbers.  EXAMPLE:

A Subtraction Algorithm. Trade First “The Trade First algorithm resembles the traditional method of subtraction, except that all the trading is done before.

Place value and ordering

Everyday Math and Algorithms A Look at the Steps in Completing the Focus Algorithms.

Everyday Math and Algorithms A Look at the Steps in Completing the Focus Algorithms.

Multiplication -2D by 2D Kids Learning is Fun

Module 1 Lesson 13 Place Value, Rounding, and Algorithms for Addition and Subtraction Topic e: multi-digit whole number subtraction 4.nbt.4 4.nbt.1 4.nbt.2.

Operations with Integers

$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.

Translating into Algebraic expressions

STEP 1 Multiply the digits in the ones place. Write the product in the ones place of the answer box. If the product is greater than ten, carry the number.

Module 1 Lesson 14 Place Value, Rounding, and Algorithms for Addition and Subtraction Topic e: multi-digit whole number subtraction 4.nbt.4 4.nbt.1 4.nbt.2.

Lesson 3-6 Example Example 2 Find the difference 572 and 286. Use expanded form. 1.Write the first number in expanded form

CS101 Learning Binary Learning Binary What do you think when you see One hundred and one What does a computer think when it sees 101? 5.

Step-by-Step Everyday Mathematics Review Partial Sums AdditionPartial Sums Addition Trade-First SubtractionTrade-First Subtraction Partial Products MultiplicationPartial.

Module 2 Lesson 8 - Solve addition and subtraction word problems using the ruler as a number line.

Warm-Up Draw a number line for both problems and solve. 1.) = 2.) = Use the same paper as yesterday!

An alternative subtraction algorithm. In order to subtract, the top number must be larger than the bottom number To make the top number.

Where do we start? Top right 4 ones minus 7 ones Can’t do it! Take one ten away Tens place 2 Where do we get more ones? 1 ten + 4 ones = 14 ones.

Dividing Polynomials. First divide 3 into 6 or x into x 2 Now divide 3 into 5 or x into 11x Long Division If the divisor has more than one term, perform.

Module 1 Lesson 15 Place Value, Rounding, and Algorithms for Addition and Subtraction Topic e: multi-digit whole number subtraction 4.nbt.4 4.nbt.1 4.nbt.2.

Expanded notation, trading and place value. By Elena and Jordan.

HW answers.. Warm-up Add or Subtract without using a calculator.

In Partial sums, we add the digits in the highest place value first. First we add the tens. Like this… = Notice that the “7” is in.

Add Whole Numbers Unit Two Lesson Four.

Solving Addition and Subtraction Equations Lesson 2.3 and 2.4.

Subtraction Subtraction is a process of taking away Look at the examples: 2 – 1 = 1 2Take away 1 Leaves 1.

Subtraction Word Problems With Missing Numbers

Subtract Whole Numbers Unit 2 Lesson 5. Objectives Explain and apply standard step-by-step approaches for subtraction. Use an inverse relationship to.

Comparing Numbers Adding Positive & Negative Numbers Subtracting Positive & Negative Numbers Algebraic Expressions Miscellaneous 100.

Place Value 29, Multiplication Division 25, Fractions Decimals 26

THE 4 METHODS All you need to know about maths. Addition  249 Lets start with this +682 sum sum.

Year’s 1 and 2 Maths Workshop Addition and subtraction.

Multiplication and Division 9 5 x 10 = 50 Multiplication and Division 9 50 x 10 = x 10 = 5000.

Addition and Subtraction 29 Addition and Subtraction Algorithms 2 ones plus 9 ones equal 11 ones. 11 is 1 ten and 1 one. Record the 1 one in the ones column.

= 126 Addition and Subtraction =

Comparative Relational Thinking

Addition and Subtraction = = = 120.

Place Value 21 Fractions and Decimals 12 ones tens hundreds thousands x 10 ÷ 10 tenths x 10 hundredths ÷ 10 x 10.

Addition and Subtraction 21

Converting Fractions into Decimals into Percents & Vice Versa

STANDARD ALGORITHMS For Year Olds

Addition and Subtraction 25

Comparative Relational Thinking

X 10 thousands hundreds tens ones Place Value 18.

Comparing Numbers.

Multiplication Day 3.

Column addition and subtraction

Column addition and subtraction

CS101 Learning Binary Learning Binary.

STANDARD ALGORITHMS For 7-10 Year Olds

Adding and Subtracting Decimals

Partial products By: Elias and Adam.

Hundred Dollar Questions

Solving Equations By, Michael Wulff The Father of algebra

Dividing Polynomials.

Task Planner for Column Subtraction Step What to do How it should look

Task Planner for Column Subtraction Step What to do How it should look

STANDARD ALGORITHMS YEARS 5-8

How to subtract Step What to do How it should look (282 – 57) ✓ 1

Adding & subtracting Fractions With Common denominator.

Adding and Subtracting

Comparing Numbers.

Add and Subtract I can use a number line to count in tens or hundreds from any starting point. I explain what each digit represents in a four digit number.

Presentation transcript:

8 ones plus 8 ones equal 16 ones. 16 is 1 ten and 6 ones. Record the 6 ones in the ones column between the equals sign. Because we have more tens, we record the 1 ten in the tens column above the equals sign. 6 tens plus 5 tens plus 1 ten equals 12 tens. 12 tens is 1 hundred and 2 tens. Record the 2 tens in the tens column between the equals sign. Because we don’t have more hundreds, we record the 1 hundred in the hundreds column between the equals sign

2 ones plus 9 ones equal 11 ones. 11 is 1 ten and 1 one. Record the 1 one in the ones column between the equals sign. Because we have more tens, we record the 1 ten in the tens column above the equals sign. 8 tens plus 8 tens plus 1 ten equals 17 tens. 17 tens is 1 hundred and 7 tens. Record the 7 tens in the tens column between the equals sign. Because we have more hundreds, we record the 1 hundred in the hundreds column above the equals sign

2 ones plus 9 ones equal 11 ones. 11 is 1 ten and 1 one. Record the 1 one in the ones column between the equals sign. Because we have more tens, we record the 1 ten in the tens column above the equals sign. 8 tens plus 8 tens plus 1 ten equals 17 tens. 17 tens is 1 hundred and 7 tens. Record the 7 tens in the tens column between the equals sign. Because we have more hundreds, we record the 1 hundred in the hundreds column above the equals sign. 6 hundreds plus 5 hundreds plus 1 hundred is 12 hundreds. 12 hundred is 1 thousand and 2 hundreds. Because we have no more thousands, we can record the 1 thousand and 2 hundreds in the thousands and hundreds columns between the equals sign

= = = = 1271

I don’t have enough ones to subtract 8 ones from 7 ones. So I can add ten to both numbers without changing the difference between them. I’ll add 10 ones as 10 ones to the top number. And I’ll add 10 ones as 1 ten to the bottom number. 17 ones minus 8 ones equals 9 ones. We’ll record the 9 ones in the ones column between the equals sign

I don’t have enough ones to subtract 8 ones from 7 ones. So I can add ten to both numbers without changing the difference between them. I’ll add 10 ones as 10 ones to the top number. And I’ll add 10 ones as 1 ten to the bottom number. 17 ones minus 8 ones equals 9 ones. We’ll record the 9 ones in the ones column between the equals sign. I don’t have enough tens to subtract 6 tens from 2 tens. So I can add 10 tens to both numbers without changing the difference between them. I’ll add 10 tens as 10 tens to the top number. And I’ll add 10 tens as 1 hundred to the bottom number. 12 tens minus 5 tens is 7 tens. We’ll record the 7 tens in the tens column between the equals sign

I don’t have enough ones to subtract 8 ones from 7 ones. So I can add ten to both numbers without changing the difference between them. I’ll add 10 ones as 10 ones to the top number. And I’ll add 10 ones as 1 ten to the bottom number. 17 ones minus 8 ones equals 9 ones. We’ll record the 9 ones in the ones column between the equals sign. I don’t have enough tens to subtract 6 tens from 2 tens. So I can add 10 tens to both numbers without changing the difference between them. I’ll add 10 tens as 10 tens to the top number. And I’ll add 10 tens as 1 hundred to the bottom number. 12 tens minus 6 tens is 6 tens. We’ll record the 6 tens in the tens column between the equals sign. 1 hundred plus 1 hundred equals 2 hundred. We’ll record the 2 hundred in the hundreds column between the equals sign

I don’t have enough ones to subtract 8 ones from 7 ones. So I can change 1 ten into 10 ones. Now I have 1 ten and 17 ones. 17 ones minus 8 ones equals 9 ones. We’ll record the 9 ones in the ones column between the equals sign

I don’t have enough ones to subtract 8 ones from 7 ones. So I can change 1 ten into 10 ones. Now I have 1 ten and 17 ones. 17 ones minus 8 ones equals 9 ones. We’ll record the 9 ones in the ones column between the equals sign. I don’t have enough tens to subtract 5 tens from 1 ten. So I can change 1 hundred into 10 tens. Now I have zero hundreds and 11 tens. 11 tens minus 5 tens equals 6 tens

= = = = =

I don’t have enough ones to subtract 8 ones from 7 ones. So I change one ten into 10 ones and now I only have one ten in the tens column. I can subtract 8 ones from 17 ones and put the answer between the equals sign

I don’t have enough tens to subtract 5 tens from one ten. I can change one hundred into ten tens. Now I have 11 tens and zero hundreds. I can subtract 5 ones from 11 ones and get six ones. This procedure tells us to put the answer between the equals sign

1.Select cards to make numbers you are ready to add or subtract. 2.Add or subtract the numbers, explain why your strategy is efficient. 3.Add or subtract using a calculator. Reflection: How do algorithms for addition and subtraction use place value? Investigation: Problem Solving What might the missing numbers be? Find a few: Problem Solving What might the missing numbers be? Find a few: Problem Solving What might the missing numbers be? Find a few :