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1. Ratios SOL 6.1 By Kathy Woodard 2011

2. Warm-up 1 Practice multiplication facts at http://www.aaastudy.com/mul39ex2.htm Now use this site to answer question #1: http://illuminations.nctm.org/ActivityDetail.aspx?ID=64 2. Simplify each fraction: 3. Evaluate each expression: 4. Write the next 3 terms in each pattern: 64, 32, 16, 8, ______, _______, _______ 14, 21, 28, 35, ______, ______, _______

4. SOL 6.1 Ratios compare two sets of data (part to whole, or part to part) a/b or a to b a:b

5. 2 to 1 2:1 2/1 or Part to Part Ratios What is the ratio of red cubes to green cubes?

6. 2 to 5 2:5 2/5 or Part to Whole Ratios What is the ratio of red cubes to all the cubes?

7. Simplify a Ratio A ratio can be simplified like a fraction. Ratio of red cubes to all the cubes: 2 to 6 2:6 1 to 3 1:3 Simplifies to

8. http://www.brainpop.com/math/ratioproportionandpercent/ratios/http://www.brainpop.com/math/ratioproportionandpercent/ratios/

9. 12:10 Simplify it 3 / 4 / or 20 TO 15 4 to 3

10. Remember: 1 L = 1000 ml /// 1000 ml

11. Be careful about the order! What is the ratio of mice to cats? Write the ratio with words & then fill in the numbers: Mice = 3 Cats 5 or

12. 7:14 butter to flour?

13. What is the ratio of… • Cats to Hamsters at Pet Place? • Dogs at Your Zoo to dogs at Pet Place? • All pets at Pet Stop to all pets at Your Zoo?

14. 08 SOL The ratio of boys to girls in Room B is 15 to 12. What is the ratio of girls to total students in Room B?

15. What is the ratio of Zizu’s miles run to Mark’s miles run? 4 to 12 or 1 to 3

16. My Halloween Candy What is the ratio of snickers to m&ms? What is the ratio of snickers to all the candy?

17. Ratio of shaded squares to total squares: 50 to 100 shaded 5 x 10 = 50 or 1 to 2 Ratio of shaded squares to unshaded squares: total 10 x 10 = 100 50 to 50 or 1 to 1

18. Ratio of shaded squares to total squares: 45:100 or 9:20 Ratio of shaded squares to unshaded squares: 45:55 or 9:11

19. Ratio of total squares to shaded squares: 100:32 or 25:8

20. 06 SOL

21. 07 SOL According to the table, what is the ratio of the number of B’s Camelia earned to the number of A’s she earned?

22. 06 SOL

23. 09 NS 6.1 Ratios

24. 10 NS 6.1 Ratios

25. Number & Number Sense 6.1 The student will describe and compare data, using ratios, and will use appropriate notations, such as ab, a to b, and a:b. Math Is Fun Good explanation and several real life examples. http://www.mathsisfun.com/numbers/ratio.html

26. Number & Number Sense 6.1 The student will describe and compare data, using ratios, and will use appropriate notations, such as ab, a to b, and a:b. Math Is Fun Good explanation and several real life examples. http://math.rice.edu/~lanius/proportions/index.html

27. Number & Number Sense 6.1 The student will describe and compare data, using ratios, and will use appropriate notations, such as ab, a to b, and a:b. Arcademic Think quick and find the equivalent ratio. http://www.arcademicskillbuilders.com/games/ratio-stadium/ratio-stadium.html