## Presentation on theme: "Minds On (Warm Up) Write your answers on a whiteboard before checking the answer!"— Presentation transcript:

Write the ratio for shaded parts to non-shaded parts. 3 : 5 click

Write the ratio for shaded to TOTAL number of parts. 3 : 8 click

Dr. Ruiz has 7 snails and 3 fish in his aquarium. What is the ratio of fish to snails? A7 : 3 B7 : 10 C3 : 7 D3 : 10

What is the ratio of snails to the total number of animals? A7 to 3 B7 to 10 C3 to 7 D3 to 10

If Dr. Ruiz adds 2 fish to this tank, what is the new ratio of guppies to the total number of animals? A1 to 2 B5 to 12 C3 to 7 D3 to 10

Bella has stickers on the front of her folder. Use the stickers to answer the questions. What is the ratio of to ? A6 : 1 B1 : 6 C1 : 2 D6 : 7

What is the ratio of to total number of stickers? A4 : 15 B4 : 19 C1 : 5 D4 : 9

Mrs. Heller's class has 14 girls and 13 boys. What is the ratio of boys to total number of students? A B C D

Equivalent ratios have the same value 1 : 4 is equivalent to 2 : 8 3 to 2 is equivalent to 27 to 18 5 35 7 is equivalent to 49

is equivalent to A True B False

is equivalent to A True B False

is equivalent to A True B False

Which ratio is equivalent to ? A B C D

Jude swims 1 lap for every 3 laps that Avery swims. Which table shows this relationship? A B C Jude15913 Avery371317 Jude15913 Avery3254565 Jude15913 Avery3152739

What value goes in the empty box for the ratio table below? 1234 510?20

What value goes in the empty box for the ratio table below? 2468 7?2128

Alexis wants some pink paint. In order to make the pink paint she needs 3 parts red paint to 1 part white paint. Complete the chart showing the amounts she could use. Red139153060150 White1/3135102050

Red139153060150 White1/3135102050 9 1/3 15 10 60 50 Answer:

On a test, the ratio of the number of problems Josie got incorrect (wrong) to the number of problems she got correct is 2:9. a) Use equivalent fractions to find how many she got correct if she got 8 problems wrong.

On a test, the ratio of the number of problems Josie got incorrect (wrong) to the number of problems she got correct is 2:9. a) Use equivalent fractions to find how many she got correct if she got 8 problems wrong. Answer: 2 = 8 9 x 2 x 4 = 8, so if I also multiply the bottom by 4, x = 36! Josie got 36 problems correct.

On a test, the ratio of the number of problems Josie got incorrect (wrong) to the number of problems she got correct is 2:9. b) Use multiplication to find how many she got incorrect if she correctly answered 63. c) Use your answer from b) to determine how many questions were on the test.

On a test, the ratio of the number of problems Josie got incorrect (wrong) to the number of problems she got correct is 2:9. b) Use multiplication to find how many she got incorrect if she correctly answered 63. c) Use your answer from b) to determine how many questions were on the test. Answer: 2:9 = n:63 9 x 7 = 63, so n = 2 x 7 = 14. She got 14 questions incorrect. Answer: 63 + 14 = 77 There must have been 77 questions on the test.

On a test, the ratio of the number of problems Josie got incorrect (wrong) to the number of problems she got correct is 2:9. d) Use a table to list four more equivalent ratios.

On a test, the ratio of the number of problems Josie got incorrect (wrong) to the number of problems she got correct is 2:9. d) Use a table to list four more equivalent ratios. 29 418 627 836 1045 Answer: See sample table.

On a test, the ratio of the number of problems Josie got incorrect (wrong) to the number of problems she got correct is 2:9. e) Use a tape diagram to determine how many problems she solved correctly if she got 24 incorrect.

On a test, the ratio of the number of problems Josie got incorrect (wrong) to the number of problems she got correct is 2:9. e) Use a tape diagram to determine how many problems she solved correctly if she got 24 incorrect. 12 = 24 12 x 9 = 108 Josie got 108 problems correct if she had 24 wrong.

On a test, the ratio of the number of problems Josie got incorrect (wrong) to the number of problems she got correct is 2:9. f) Read this question carefully – you will need to think a bit differently from the previous question =) Use a tape diagram to determine how many problems she solved incorrectly if the total number of questions on the test was 88. (hint: first determine the ratio of incorrect questions to total questions?)

On a test, the ratio of the number of problems Josie got incorrect (wrong) to the number of problems she got correct is 2:9. f) Read this question carefully – you will need to think a bit differently from the previous question =) Use a tape diagram to determine how many problems she solved incorrectly if the total number of questions on the test was 88. (hint: first determine the ratio of incorrect questions to total questions?) 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 = 72 If the total number of questions on the test is 88, then each box must be worth 8, as there are 11 in total. = 16