Monday Homework: Integer WS 1st:Fill out planner 2nd: Place on your desk: Name tag Pink integer notes sheet Green decimal notes ½ sheet Integers (add/sub) worksheet 3rd: Do Warm up below: Warm Up: A. Take out & read your pink and green note sheets on integers/decimals SILENTLY Friday
1. Dress code check 2. Review Notes 3. Set up Composition book 4. Check out Textbook 6. Homework This week at a glance: Monday: Finish review of integers & decimals Tuesday: Fractions Review Wednesday: Order of Operations review Thursday: 1st day of textbook (1.1 whole # equations) Friday: check out computers/homework quiz
Above each Operation in Flow Chart Operations Vocabulary Addition Subtraction Multiplication Division Addend + Addend = Sum Minuend - Subtrahend = Difference Dividend ÷ divisor = Quotient Factor x Factor = Product
On Back of Pink Integer Chart Multiply or divide
Multiply or Divide as usual Review Integer Rules Addition Subtraction Multiplication Division Are the Signs the Same? Change subtraction sign to addition & change the sign of the 2nd # to its opposite Multiply or Divide as usual Yes No Are the signs the same? Add Subtract Yes No Follow directions for addition Sign is same as both #’s Sign of the larger # Positive Negative
Practice on worksheet
Review Decimal Operations Add or subtract Multiplication Division
= Learn to multiply decimals. You can use decimal grids to model multiplication of decimals. Each large square represents 1. Each row and column represents 0.1. Each small square represents 0.01. The area where the shading overlaps shows the product of the two decimals. 0.7 0.8 0.56 =
Learn to multiply decimals. Rules: Set up multiplication problem as you normally would. (DO NOT align the decimals.) Multiply Count the number of decimal places to the right of the decimal on both lines Starting on the far right of the product, move the decimal the total # of places you counted above.
Multiplying Decimals by Decimals –3.84 • 0.9 –3.84 0.9 2 decimal places 1 decimal place –3.456 2 + 1 = 3 decimal places Estimate to check –4 · 1 = –4 –3.456 is a reasonable answer.
Learn to multiply decimals. Your Turn Multiply. 1. 3.4 (-4.1) 2. 7.62 (–5.4) 3. Dennis runs 7.2 miles per day. How far does he run in 5 days? -13.94; Estimate: 3 • 4 = 12 –41.148; Estimate: 8 • (–5) = –40 36 miles
Divide. Estimate to check whether each answer is Reasonable. SAME AS –24 –2.5 –24 ÷ (–2.5) –24.0 ÷ (–2.5) = –240 ÷ (–25) Multiply both numbers by 10. 9 . 6 25 ) 240 . Divide as with whole numbers. – 225 15 – 15 0 Estimate –24 ÷ (–3) = 8 The answer is reasonable.
Learn to divide decimals. If you divide by a whole number, move the decimal in the dividend straight up. Then divide as normal.
Learn to divide decimals. If you divide by a decimal number: 1st: Move decimal in the divisor (outside #) all the way to the right. 2nd: Move decimal in the dividend (inside #) the same number of places. 3rd: Move your decimal straight up & divide as normal
Divide. Estimate to check whether each answer is reasonable. Your Turn Divide. Estimate to check whether each answer is reasonable. 1. 78.2 ÷ 0.04 2. –9.72 ÷ 2.7 3. 18.88 ÷ 1.6 4. -28 ÷ (-15.911) 5. Jordan used 32.46 gallons of gas to drive his van 584.28 miles. How many miles did Jordan get per gallon? 1,955 –3.6 11.8 -12.089 18