Opening Week Lessons A review of elementary concepts

How to Add09/10/08 2R How to Add09/10/08 2L Standards: None. Vocabulary: Addition-

Vocabulary: ADDITION The process of uniting two or more numbers into one sum; represented by the symbol +. The numbers added together are known as addends. The answer is known as the sum. Other ways you know addition: – Increase – Plus – More – Added to – Total – The sum of

How to Add09/10/08 2R How to Add09/10/08 2L Standards: None. Vocabulary: Addition- Objective:

Objective Demonstrate addition of decimals to the thousandths.

How to Add09/10/08 2R How to Add09/10/08 2L Standards: None. Vocabulary: Addition- Objective: Notes/ Examples:

How to Add… , Step 1. Set-up by aligning decimals. Step 2. Starting on right side, begin operation of corresponding digits. Step 3. If a sum gives a 2-digit result, record right digit and carry left one to next place value. Include the # carried over in the next column sum. Step 4. Bring down decimal and insert commas between every 3 digits.

How to Add09/10/08 2R How to Add09/10/08 2L Standards: None. Vocabulary: Addition- Objective: Notes/ Examples: Moral of the Story:

The Moral of the Story… EVERY number has a decimal, so you’ll always be able to set-up addition problems. Simply convert to equivalent decimals. For example: 65 plus 125, ,387  125,  ,

How to Subtract09/11/08 3R How to Add & Subtract Review 09/12/08 3L Standards: None. Vocabulary: Subtraction-

Vocabulary: SUBTRACTION The process of calculating the difference between two numbers; removing a part from the whole. Represented by the symbol -. The numbers subtracted are known as the minuend & the subtrahend. The answer is known as the difference. Other ways you know subtraction: – Minus – Diminished – Take away – Decreased – Less than – How many more?

How to Subtract09/11/08 3R How to Add & Subtract Review 09/12/08 3L Standards: None. Vocabulary: Subtraction- Objective:

Objective Demonstrate subtraction of decimals to the thousandths.

How to Subtract09/11/08 3R How to Add & Subtract Review 09/12/08 3L Standards: None. Vocabulary: Subtraction- Objective: Notes/ Examples:

How to Subtract… Step 1. Set-up by aligning decimals. Step 2. Starting on right side, begin operation of corresponding digits. Step 3. If the top # is smaller than the bottom # and you cannot subtract, borrow from place value next door. Make sure to reduce the # borrowed from. Step 4. Bring down decimal and insert commas between every 3 digits.

How to Subtract09/11/08 3R How to Add & Subtract Review 09/12/08 3L Standards: None. Vocabulary: Subtraction- Objective: Notes/ Examples: Moral of the Story:

The Moral of the Story… More on top? No need to stop! More on the floor? Go next door. Get one ten. That's ten ones more. Numbers the same? Zero's the game!

How to Multiply09/15/08 4R How to Multiply09/15/08 4L Standards: None. Vocabulary: Multiplication-

Vocabulary: MULTIPLICATION The addition of a number to itself as often as indicated by another number; symbolized by a × b, a · b, a ∗ b, or ab. The numbers multiplied are known as factors. The answer is known as the product. Other ways you know multiplication: – Times – Of – Multiply by – The product of

How to Multiply09/15/08 4R How to Multiply09/15/08 4L Standards: None. Vocabulary: Multiplication- Objective:

Objectives Demonstrate multiplication of whole numbers up to a 4-digit number by a 2-digit number. Demonstrate multiplication of decimals to the thousandths.

How to Multiply09/15/08 4R How to Multiply09/15/08 4L Standards: None. Vocabulary: Multiplication- Objective: Notes/ Examples:

How to Multiply… x Step 1. Set-up multiplication problem; don’t worry about decimal until step 6. Step 2. Starting on right side, multiply bottom # by each # in the top row. Step 3. If a product gives a 2-digit result, record right digit and carry left one to the next place value. Make sure to add # carried over to next product.

How to Multiply… x ,317.6 Step 4. Use zero as a placeholder. Step 5. Repeat steps 2 & 3 with next bottom #. Continue until all digits in bottom # have been used. Add products. Step 6. Incorporate the # of decimal places in the factors into final answer. Insert a comma between every 3 digits.

How to Multiply09/15/08 4R How to Multiply09/15/08 4L Standards: None. Vocabulary: Multiplication- Objective: Notes/ Examples: Moral of the Story:

Moral of the Story When multiplying decimals, count the number of decimal places in the factors. Include this many decimal places in your answer.

How to Divide09/17/08 5R How to Divide09/17/08 5L Standards: None. Vocabulary: Division-

Vocabulary: DIVISION Determining how many times one number or quantity fits into another. Symbolized by a ÷ b, b a, a/b. The number being divided is known as the dividend. The number doing the dividing is known as the divisor. The answer is known as the quotient. Other ways you know division: Divided by The quotient of ¼ of; ½ of Ratio

How to Divide09/17/08 5R How to Divide09/17/08 5L Standards: None. Vocabulary: Division- Objective:

Objectives Demonstrate division of whole numbers up to two-digit divisors. Demonstrate division of decimals to the thousandths as divisors.

How to Divide09/17/08 5R How to Divide09/17/08 5L Standards: None. Vocabulary: Division- Objective: Notes/ Examples:

How to Divide… Step 1. Set up division problem. Step 2. From left to right, divide first digit of the dividend (inside) by the divisor (outside). Step 3. Multiply answer by the divisor (outside) and subtract. Step 4. Bring down remaining digit(s) of dividend and repeat steps 2 &

How to Divide… EXAMPLE # 1

How to Divide… EXAMPLE # 2

How to Divide… EXAMPLE # 3

How to Divide09/17/08 5R How to Divide09/17/08 5L Standards: None. Vocabulary: Division- Objective: Notes/ Examples: Moral of the Story:

The Moral of the Story… Divide Multiply Subtract Bring Down Repeat