Place Value
Identify the place and value of the bolded number.
4,423,241
Hundred Thousands
400,000
Is the following number divisible by 2?
4,352,428
Explain your answer.
Yes.
It is divisible by 2 because the last digit is an even number.
What does LCM stand for?
Least Common Multiple
A zoo has 5 lions, 30 monkeys, and 12 kangaroos.
What is the ratio of lions to monkeys?
Write your answer in simplest form.
5 to 30
Simplest form: 1 to 6.
For each lion there are 6 monkeys.
Create an equivalent fraction/ratio for the following.
5
_____
8
Answers will vary. Simply multiply the numerator and the denominator by the same number.
For example: 5 x 2 10
_____ = _______
8 x 2 16
Identify the place and value of the bolded number.
120,423,241
Ten Millions
20,000,000
Is the following number divisible by 3?
45,342
Yes.
The sum of the digits (4+5+3+4+2 = 18) is divisible by 3 (18÷3 = 6), the whole number is divisible by 3.
What is the GCF of 40 & 24?
8
A zoo has 5 lions, 30 monkeys, and 13 kangaroos.
What is the ratio of lions and kangaroos to monkeys?
Write your answer in simplest form.
5 + 13 = 18
18
______
30
Simplest form: 3
______
5
For every 3 lions and kangaroos, there are 5 monkeys.
Determine if the pair of ratios or rates is equivalent.
$12 for 3 books; $28 for 7 books.
$12 ÷ 3 $4
______ = _____
3 books ÷ 3 1 book
$28 ÷ 7 $4
______ = _______
7 books ÷ 7 1 book
Yes. They are equivalent because it is $4 per book in both ratios.
Identify the place and value of the bolded number.
983,423,241,242
Ones place.
2
How do you know if a number is divisible by 6?
A number is divisible by 6 if it is divisible by BOTH 2 and 3.
What is the LCM of 6 & 8?
24
A box of soda cans cost $60.75. If there are 45 cans in the box, what is the unit price (the price for one can)?
$60.75 ÷ 45 = $1.35
______ ______
45 cans ÷ 45 1 can
1 5
______ ________
4 15
Are thew two ratios equivalent? Explain your answer.
1 x 5 = 5 5
______ ________
4 x 5 = 20 15
No. They are not equivalent fractions because you can't use multiplication to create the same numerator and denominator.
Write the following number in word form.
9,432,345
Nine million, four hundred thirty two thousand, three hundred forty five.
Is the following number divisible by 5?
143,005
Explain your answer.
Yes.
It is divisible by 5 because the final digit is 5.
What is the GCF of 36 and 42?
6
Chrismerly travelled 660 miles in 6 hours. On average, how fast was he traveling?
660 miles ÷ 6 = 110 miles
________ ________
6 hours ÷ 6 = 1 hr
George Washington read the first 60 pages of a book in 3 days. He read the last 90 pages in 6 days. Are these reading rates equivalent? Explain your answer.
60 pages ÷ 3 20 pages
________ = ___________
3 days ÷ 3 1 day
90 pages ÷ 6 15 pages
________ = __________
6 days ÷ 6 1 day
No. He read the last 90 pages more slowly.
Write the following number in word form.
511,510
Five hundred eleven thousand, five hundred ten
134,162,400
This is divisible by which of the following numbers?
2, 3, 5, 6, 10
This is divisible by 2, 3, 5, 6, and 10!
What is the GCF of 6, 9, and 15?
3
If 15 baseballs weigh 75 ounces, how many baseballs weigh 15 ounces?
15 baseballs ÷ 3 3 baseballs
________ = _________
75 ounces ÷ 3 15 ounces
Ezequiel bought 100 ice-cream cones for $40. Chrismerly bought 70 ice-cream cones for $25.
Did they pay the same amount per ice-cream cone? Explain your answer.
$40 ÷ 100 $0.4 or 40 cents
________ = _________
100 cones ÷ 100 1 cone
$25 ÷ 75 $0.33 or 33 cents
_______ = ________
75 cones ÷ 75 1 cone
No. Ezequiel paid 40 cents a cone and Chrismerly only paid 33 cents per cone.