# Connected Mathematics 2: Prime Time / Factors and Multiples by PRENTICE HALL

By PRENTICE HALL

• Soft-bound, 3-hole-punched to slot in scholars' binders
• 4-color with a fascinating Unit Opener, Investigations, log on internet codes, ACE Homework, Mathematical Reflections, a Unit venture, on reflection and searching forward, and a word list of phrases in English and Spanish
• Available in English and Spanish

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Additional resources for Connected Mathematics 2: Prime Time / Factors and Multiples

Example text

Examine the number pattern below. You can use the tiles to help you see a pattern. Row 1: 1 =1 Row 2: 1 + 3 =4 Row 3: 1 + 3 + 5 =9 1 1+3 1+3+5 Row 4: 1 + 3 + 5 + 7 = 16 a. Complete the next four rows in the number pattern. b. What is the sum in row 20? c. In what row will the sum be 576? What is the last number (addend) in the sum in this row? Explain. qxd 3/9/05 4:55 PM Page 47 42. Examine the pattern below. Using tiles or making a diagram may help you see a pattern. Row 1: 2 =2 Row 2: 2 + 4 =6 Row 3: 2 + 4 + 6 = 12 Row 4: 2 + 4 + 6 + 8 = 20 a.

64 D. 72 26. a. List all the numbers less than or equal to 50 that are divisible by 5. b. Describe a pattern you see in your list that you can use to determine whether a large number—such as 1,276,549—is divisible by 5. c. Which numbers in your list are divisible by 2? d. Which numbers in your list are divisible by 10? e. How do the lists in parts (c) and (d) compare? Why does this result make sense? 27. Allie wants to earn some money for a new bike. She tells her dad she will wash the dishes for 2 cents on Monday, for 4 cents on Tuesday, and for 8 cents on Wednesday.

A. What is the greatest number of students that can go on the field trip and share the food equally with no food left over? How many cans of juice and how many packs of crackers will each student receive? Explain. B. Suppose Miriam’s uncle eats two packs of crackers before he sends the supplies to school. What is the greatest number of students that can go on the field trip and share the food equally? How many cans of juice and how many packs of crackers will each student receive? Homework starts on page 42.