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Addition and Subtraction

TOPIC 2 Addition and Subtraction 4.4A (4.3A old) Add and subtract whole numbers and decimals to the hundredths place. 4.3B Use concrete object and pictorial models. 4.2D (4.5A old) Round whole numbers and decimals to a given place value through the hundred thousands place.

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Addition and Subtraction

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  1. TOPIC 2 Addition and Subtraction4.4A (4.3A old)Add and subtract whole numbers and decimals to the hundredths place.4.3B Use concrete object and pictorial models.4.2D (4.5A old) Round whole numbers and decimals to a given place value through the hundred thousands place.

  2. Addition and Subtraction • 4.4A I CAN……… • Add and Subtract whole numbers and decimals to the hundredths place. • 4.2D I CAN…… • Roundwhole numbers and decimals to a given place value through the hundred thousands place. VOCABULARY Commutative property Associative property Identity property Inverse operations VOCABULARY Addend Sum Minuend Subtrahend Difference

  3. Topic 2-1 Number Sense (mental) for Addition and Subtraction • BIG IDEA…… • Numbers have properties that make it simple to calculate results. • There is more than one way to solve a math problem.

  4. SEE VIDEO 2-1 FOR 2 Column notes

  5. Topic2-2 Rounding Whole Numbers and Decimals

  6. SEE VIDEO 2-2 FOR 2 Column notes

  7. Topic 2-3Estimating Sums and Differences of Whole Numbers

  8. SEE VIDEO 2-3 FOR 2 Column notes

  9. Topic 2-5 Missing or Extra Information • BIG IDEA…… • Some word problems don’t have enough info to be solved. • Some word problems have too much info that doesn’t need to be used to solve the problem. We do not know how many calories the apple has, so we can’t solve for how many calories Kayla had for lunch!!

  10. Topic 2-6 Adding Whole NumbersTopic 2-7 Subtracting Whole Numbers • BIG IDEA…… • Addition and Subtraction are related to each other.They are inverse operations. • Addition and subtraction can be used to solve problems.

  11. SEE VIDEO 2-6 and 2-7 FOR 2 Column notes

  12. 2-8 Subtracting Across Zeros

  13. SEE VIDEO 2-8 FOR 2 Column Notes

  14. Topic 2-9 Addition and Subtraction of Decimals (3rd Grade Review) • BIG IDEA • Decimals are added and subtracted using the same rules as whole numbers. • Money can be represented using decimals.

  15. SEE VIDEO 2-9 FOR 2 Column notes

  16. Topic 2-10 Draw a Picture and Write an Equation • BIG IDEA • Using pictures helps decide which operation is needed to write equations and solve real world problems.

  17. SEE VIDEO 2-10 FOR 2 Column notes Each day, Mikala sold the same number of tickets to the school play.On Monday she sold 4 tickets. How many tickets did she sell altogether in 5 days? Julia spent $9.35 on popcorn and a drink at the movie theatre. She spent $8.00 on her movie ticket.The popcorn cost $5.65. How much was the cost of the drink? • Practice: • 37-18 = ? • 6 + 12 + 11 = ?

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