Perimeter. Perimeter is the distance around a figure. Add to find the perimeter (P) of each figure. P

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1 Place Value: Large Numbers... 5 Comparing Numbers...6 Rounding Numbers...7 Two-Digit Addition with Regrouping...8 Three-Digit Addition with Regrouping...9 Addition of Large Numbers Problem olving: Addition Two-Digit ubtraction with Regrouping...12 Three-Digit ubtraction with Regrouping...13 ubtraction of Large Numbers...14 Problem olving: ubtraction...15 Estimating ums and Differences...16 Multiplication Basic Facts...17 Multiplying with 10, 100, and 1, Multiplying with Multiples of 10, 100, and 1, Multiplication Multiplication with Regrouping...21 Extending Multiplication with Regrouping.. 22 Problem olving: Multiplication with Regrouping Multiplying with Multiples of Estimating Products Two-Digit Multiplication Three-Digit Multiplication Problem olving: Two- and Three-Digit Multiplication Division Basic Facts Division with Remainders...30 Dividing Multiples of One-Digit Division More One-Digit Division One-Digit Division with Remainders Problem olving: One-Digit Division Estimating Quotients Two-Digit Division More Two-Digit Division Extending Two-Digit Division Problem olving: Two-Digit Division Factors and Greatest Common Factor...41 Multiples and Least Common Multiple Fractions Equivalent Fractions in Higher Terms Equivalent Fractions in Lower Terms Comparing Fractions Addition of Like Fractions ubtraction of Like Fractions ubtraction of Like Fractions Addition of Unlike Fractions...50 ubtraction of Unlike Fractions...51 Addition and ubtraction of Unlike Fractions ubtraction of Unlike Fractions Mixed Numbers and Improper Fractions Improper Fractions and Mixed Numbers Addition and ubtraction of Mixed Numbers ubtraction of Mixed Numbers with Regrouping Addition of Mixed Numbers with Unlike Fractions ubtraction of Mixed Numbers with Unlike Fractions ubtraction of Mixed Numbers Fractional Part of a et...61 Multiplication of Fractions More Multiplication of Fractions Multiplication of Mixed Numbers Problem olving: Multiplication of Fractions Reciprocals and the Division of Fractions Division with Fractions and Whole Numbers Division with Fractions Division with Mixed Numbers Problem olving: Division with Fractions... 70

2 Decimals Tenths and Hundredths...71 Decimals Thousandths Decimals Place Value Comparing Decimals Changing Fractions to Decimals Addition with Decimals ubtraction with Decimals Money Problems Addition and ubtraction Problem olving: Money More Addition and ubtraction with Decimals ubtraction with Decimals...81 Multiplication with Decimals More Multiplication with Decimals Money Problems Multiplication Multiplying Decimals by 10, 100, and 1, Problem olving: Multiplication with Decimals Division of Decimals by Whole Numbers Dividing Decimals by 10, 100, and 1, Division with Decimals More Division with Decimals Money Problems Division...91 Fractions and Equivalent Decimals Problem olving: Division with Decimals Ratios Rates and Unit Rates Problem olving: Ratios and Rates Introduction to Percent Fractions, Decimals, and Percents Fractions and Percents Finding a Percent of a Number More Finding a Percent of a Number Problem olving: Finding a Percent of a Number Geometry Concepts Angles Parallel and Perpendicular Lines Triangles Quadrilaterals Circles Customary Units of Length Customary Units of Capacity Customary Units of Weight Problem olving: Customary Units Metric Units of Length Metric Units of Capacity Metric Units of Mass Problem olving: Metric Units Perimeter Perimeter Rectangles Perimeter quares Circumference of a Circle Problem olving: Perimeter and Circumference Area Area Rectangles Area Triangles Problem olving: Area Volume Volume Rectangular olids Problem olving: Volume

3 Perimeter is the distance around a figure. Add to find the perimeter (P) of each figure. Perimeter 1. 7 m 2 m 6 cm 10 cm cm 18 m mm 4.5 cm 4 cm 1.5 cm 4 cm 28 mm 42 mm 5. 6 km 6. 5 km 35 mm 7. 3 cm 1 cm 1 cm 5 cm cm PRACTiCE EXERCiE in BAiC MATH 117

4 Perimeter Rectangles The perimeter of a rectangle is (2 3 length) 1 (2 3 width). The formula for this is written (2 3 l) 1 (2 3 w). Use the formula to find the perimeter of each rectangle. 6 cm 3 cm 1. 2 km 7 km 5 m 12 m (2 3 l) 1 (2 3 w) (2 3 6 ) 1 (2 3 3 ) cm 3. l 5 10 km, w 5 9 km (2 3 l) 1 (2 3 w) (2 3 ) 1 (2 3 ) 1 km 4. l 5 54 m, w 5 24 m (2 3 l) 1 (2 3 w) (2 3 ) 1 (2 3 ) 1 m 5. l 5 15 cm, w 5 7 cm 6. l 5 28 cm, w 5 36 cm 7. l 5 9 km, w 5 6 km 8. l m, w 5 75 m 9. A pasture is a rectangle 50 meters long and 39 meters wide. What is the perimeter of the pasture? 10. A cat door is a rectangular flap over a hole cut in a door. The cat door is 22 centimeters high and 16 centimeters wide. What is the perimeter? 118 PRACTiCE EXERCiE in BAiC MATH

5 Perimeter quares The perimeter of a square is 4 3 side. The formula for this is written 4 3 side. Use the formula to find the perimeter of each square. 5 m 1. 8 cm 3.5 m 4 3 s 4 3 s 4 3 s m cm m 3. s 5 2 km 4. s 5 12 cm 5. s 5 60 mm 6. s 5 35 m 7. s 5 96 cm 8. s km 9. The entrance to an attic is a square hole 80 centimeters on each side. What is the perimeter of the hole? 10. A sidewalk surrounds a square building that measures 125 meters on each side. What is the perimeter of the building? PRACTiCE EXERCiE in BAiC MATH 119

6 Circumference of a Circle The circumference of a circle is the distance around it. It is equal to pi (p) times the diameter of the circle. Pi is a special number that is close to The formula is written or C d. Use the formula to find the circumference of each circle. 6 cm 1. 4 m 10 cm C C C C cm C 5 m C 5 cm Find the circumference of each circle. Remember, the diameter is 2 times the radius (r). r 5 4 cm 3. r 5 8 m 4. r 5 10 cm C C cm Find the circumference of each circle. Use the diameter or radius given. 5. d 5 2 cm 6. r 5 7 km 7. d 5 12 mm 8. r 5 5 m 9. d m 10. r cm 11. A circular fountain has a diameter of 3 meters. What is the circumference of the fountain? 1 A wheel has a radius of 28 centimeters. What is the circumference of the wheel? 120 PRACTiCE EXERCiE in BAiC MATH

7 Problem olving: Perimeter and Circumference 1. A poster is 71 centimeters long and 56 centimeters wide. How much tape does alim need to cover its edges? Mr. Han s backyard is a square 25 meters on a side. How much fencing would he need to completely surround the backyard? 3. A dinner plate has a diameter of 20 centimeters. What is the circumference of the plate? 4. The football team jogged once around the football field. If the field is 110 meters long and 49 meters wide, how far did the team jog? 5. Ms. Cohen walks around the edge of a square park that is 300 meters long on a side. How far does she walk? 6. A traffic circle has a radius of 5.25 meters. What is the circumference of the traffic circle? 7. Inez is building a pen for her pet rabbit. The pen is 2 meters long and 1.5 meters wide. What is the perimeter of the pen? 8. A field of corn is 0.75 kilometer long and 0.35 kilometer wide. What is the perimeter of the field? PRACTiCE EXERCiE in BAiC MATH 121

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