{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

302a pp section 5.2 Fraction III

# 302a pp section 5.2 Fraction III - 7/11 5.5/11 is half and...

This preview shows pages 1–10. Sign up to view the full content.

Fractions III

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Agenda Fraction concepts from 5.2 Fraction models reviewed Fraction operations examined Exploration 5.12 Part 1. (Page 114)
Pictorial Models In the Class Notes, we saw questions dealing with pictorial models. Show 5/6 and 7/2 using each pictorial model: Part-whole Discrete Number line (length)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Pictorial Models 5/6 7/2 0 2/6 4/6 1 0 1 2 3 4
Exploration 5.11 Look at Part 2 #1a. (p. 113) Decide whether each is closer to 0, closer to 1/2, or closer to 1. After you have made your guesses, click to see my reasoning.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Reasoning 3/8: 4/8 is half, so 3/8 is close to 1/2 . 2/7: 3.5/7 is half, and so 2/7 is closer to 3.5/7 than 0/7. Close to 1/2 . 1/3: 1.5/3 is half, and so 1/3 is closer to 1.5/3 than 0/3. Close to 1/2 . 21/50: 25/50 is half, and 21/50 is close to 25/50, so close to 1/2. OR: 21/50 is close to 20/50, which is 2/5, 2/5 is closer to 2.5/5 than to 0/5, so 21/50 is close to 1/2.
Reasoning 4/5: 2.5/5 is half, and 4/5 is closer to 5/5 than 2.5/5, so 4/5 is close to 1 .

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 7/11: 5.5/11 is half, and so 7/11 is closer to 5.5/11 than 11/11, so 7/11 is close to 1/2. 31/181: 90.5/181 is half, and so 31/181 is closer to 0/181 than 90.5/181. So, 31/181 is close to 0. OR 31/181 is close to 30/180, which is 1/6. 1/6 is closer to 0 than 3/6, so 31/181 is close to 0. Try these 5/75: 5/75 = 1/15, so close to 0 . 39/393: close to 40/400, or 1/10, so close to 0 . 450/473: close to 45/47, nearly 1. 12/21: 11.5/21 is half, so 12/21 is nearly 1/2 . 73/153: close to 75/150 which is 1/2 . 94/694: close to 100/700, which is 1/7. Closer to 0. Now, tell whether greater or less than 1/2 41/84 41/84 < 1/2 37/111 37/111 < 1/2 294/580 294/580 > 1/2 490/999 490/999 < 1/2 8765/17353 8765/17353 > 1/2 Exploration 5.12 Do Part 1 #1. Write a reason for each decision in a, b, c, and d. If you do this with a partner, list each other’s name on your paper....
View Full Document

{[ snackBarMessage ]}