Grade 5 Answer Key 2015
Answers will vary for many of the activities depending on the choices
students make. Here are the answers for activities with specific solutions.
July 1
The sprinkler rotated 90 degrees. The sprinkler needs to rotate 270 degrees to
cover the full 360 degrees.
July 6
4.527
July 9
6, 11, 16, 21…
The pattern is an even number followed by an odd number. This pattern is
happening because an even plus an odd number is odd (6 + 5 = 11), and an odd
plus an odd is an even number ( 11 + 5 = 16)
July 15
5 pizzas for 15 friends
3 pizzas for 9 friends
15 x 1/3 = 5
9 x 1/3 = 3
July 17
Examples:
2 1/2 + 2 1/2 = 5
1 3/4 + 3 1/4 = 5
1 1/4 + 3 3/4 = 5
July 29
1/3 + 1/3 = 2/3 of the pizza was eaten
1/3 of the pizza was left
July 30
28 is a composite number. Possible answers for three facts: an even number; a
perfect number as the sum of it’s proper factors (besides 28) equal to 28; the
ones place is 4 times the size of the tens place.
When rounded to the nearest ten, it is 30.
A prime number is a whole number greater than zero that has exactly two
different factors, one and itself. For example, 5 is a prime number because its
only two factors are 1 and 5. A composite number is a whole number greater
than zero that has more than two different factors. For example, 8 is a composite
number because its factors are 1, 2, 4, and 8.
1 is neither prime nor composite. It is not prime because it does not have exactly
two factors. It is not composite because it does not have more than 2 factors. 1 is
a special number.
August 4
A pentagon has 5 sides.
2 1/8 x 5 = 10 5/8 cm
August 7
A design is symmetrical if a line can be drawn such that the design can be folded
along the line into matching parts.
August 10
Example:
August 11
Examples:
5 ¾ - 2 2/4 = 3 ¼
9¾-6¾=3¼
4 2/4 – ¼ = 3 ¼
August 17
7 hours of babysitting times 5 dollars per hour 7 x 5 = 35 dollars
6 hours of weeding times 4 dollars per hour
6 x 4 = 24 dollars
$24 + $35 = $59
$80 - $59 = $21
You need $21 more dollars to buy the game.
August 20
3/4 + ¼ + 2/4 = 6/4 = 1 2/4
1 2/4 cups of liquid
This is less than a pint because there are 2 cups in a pint.
August 24
E, F, H, I, M, N, Z
E has 3 parallel lines
August 25
The largest number is 87,421.
The smallest is 12,478
Their sum is 99,999.
Their difference is 74,943.
August 27
7 x 5 = 35
9 x 5 = 45
11 x 5 = 55
August 28
Example:
Numeral: 86,532
Word Form: eighty six thousand five hundred thirty two
Expanded Form: 86,532 = 80,000 + 6,000 + 500+30+2