Must-Know Math: 25 Activities to Build Key Skills in 5th Grade
Answer Key
Page 3
Page 9
Answers top to bottom, left to right: 6; 2; 1; 7; 3; 5; 8; 4
Page 4
A
B
2
7
2 4 2 0
1 0 3 6 1
2 1 9
3
5 8 6
8
9 0 5
7
7 2 9 2 1
4 9 5 0
7
9
C
D
E
F
H
J
L
K
M
O
P
R
Q
I
3
2
2
6
5
4
8
N
G
7
2 3
0
1 9
6
Page 5
(1) 1,200; (2) 4,000; (3) 3,500; (4) 1,500; (5) 1,600;
(6) 15,000; (7) 16,000; (8) 21,000; (9) 40,000
Answer to joke: Time is fun when you are having flies.
Page 6
Answers left to right, top to bottom:
128; 124; 278; 126; 276; 273; 63; 279; 67
Ike the ram: President Wilson;
Jack the turkey: President Lincoln;
Socks the cat: President Clinton; Poll the parrot:
President Jackson; Bo the dog: President Obama;
Spot the dog: President Bush; Pauline the cow:
President Taft; Emily the snake: President Roosevelt;
Whiskers the goat: President Harrison
Page 7
Answers left to right, top to bottom: false; true; true;
true; false; false; true; false
Page 8
(1) translation, rain; (2) translation, snort; (3) reflection,
note; (4) reflection, colt; (5) rotation, root; (6) rotation, oar
(Word scramble answers will vary.)
(Rectangle A) length: 6 inches, perimeter: 20 inches;
(Rectangle B) width: 8 inches, perimeter: 36 inches,
favorite game goes here; (Rectangle C) width: 5 inches,
area: 60 square inches; (Rectangle D) length: 12 inches,
perimeter: 30 inches; (Rectangle E) perimeter: 32 inches,
area: 63 square inches, favorite book goes here;
(Rectangle F) width: 2 inches, area: 22 square inches;
(Rectangle G) width: 1 inch, area: 18 square inches,
favorite singer goes here; (Rectangle H) width: 4 inches,
perimeter: 20 square inches, favorite TV show goes here
Page 10
(1) @3; (2) !4; (3)
@3 ; (4) 1$1 ; (5) #5 ; (6) %9 ; (7) @9; (8) !2 ; (9) @7;
(10) !9; (11) !1)2)1 ; (12) 1!7 ; (13) 4#0 .
Answer to riddle: They both have four quarters.
Page 11
(1) >; (2) <; (3) <; (4) >; (5) <; (6) >; (7) =; (8) <; (9) <;
(10)
2&2 ; (11) 1(0 ; (12) #4
Page 12
1!0 •
•.3
1
C
1
) 0
& 0
) • 2
A
1
) 0
# 0
) •
3
•.01
1&0 •
4
1 0#0 0 •
1 0!0 0 •
I
1 0&0 0 •
6
•.1
E
5
S
K
•.9
W
•.001
1 0(0 0 •
1
) 0
! 0 •
•.07
•.003
U
8
1(0 •
•.03
•.09
1#0 •
7
1
) 0
( 0
) •
•.007
9
Answer to joke: wise-quacks
•.7
Q
•.009
Page 13
Page 15
(1) $8; (2) $42; (3) $36; (4) $50; (5) $40; (6) $68; (7)
$75; (8) $139
Maction Number: 6
@5
3!5
2 2$5
1!5
1#5
2@5
Pages 16-17
Answers will vary. Students should find the same number
in all three “islands” (green boxes).
Page 18
!2 ; 153; (2) 1 !4; 20; (3) 2; 10,000,000; (4) 32; 44; (5)
3!2 ; 200; (6) 2 @5 ; 293; (7) 3; 13; (8) 2&4 ; 74,800,000
(1) 1
Page 19
3#5
$5
Maction Number: 5
2@3 !3
Answers from top to bottom, left to right: 12 pints,
Highlanders; 1 gallon, Browns; 3 gallons, Americans; 5
gallons, Pilots; 3 quarts, Titans; 4 cups, Oilers; 256 fluid
ounces, Pirates; 64 cups, Royals; 5 quarts, Braves; 7
quarts, Supersonics
Pages 20-21
2
1@3
1
2!3
(1) a. 2 hours 25 minutes; b. 2 hours 15 minutes; c. 2
hours 20 minutes; (2) a. 1 hour 45 minutes; b. 1 hour 55
minutes; c. 1 hour 50 minutes; d. 1 hour 55 minutes; e. 1
hour 55 minutes; f. 1 hour 50 minutes; (3) train #2;
(4) 8:00 a.m., train #1, 9:45 a.m.; (5) Sum; (6) 45
minutes; (7) 25 minutes; (8) a. 45 minutes; b. 10:50 a.m.;
c. 30 minutes
Pages 22-23
1!3
3
@3
(1) a. cartoons; b. news; (2) a. reality; b. news;
(3) about 15; (4) about 4 times as many; (5) sitcoms;
(6) about 17 boys; (7) cartoons; (8) cartoons;
(9) about 18 girls; (10) about 2 times as many.
Color in
the key.
Maction Number: 1!4
!2 1!2
1&2
@3
5th- and 6th Graders’
Favorite Types of Movies
Give
the graph
a title.
5th Grade
6th Grade
30
25
1%2
!4
20
15
10
!6
#4
Page 14
Answers will vary.
5
!3
0
Label
the vertical
axis.
Drama
Decide what
scale to use,
and label the
intervals.
Comedy
Animation
Action
Science
Fiction
Type of Movie
Label the
horizontal
axis.
List the
movie types
in the ovals.
X
X
XX
X
X
X
XX
XXXXX
X
Page 24
25 30 35 40 45 50 55 60 65 70 75
Answers from top to bottom: 40; 35; 30; 45
Page 25
(1) 2; (2) —3; (3) 8; (4) —6; (5) —7; (6) —2; (7) —8; (8) 0
Page 26
(1) twenty-five; (2) first; (3) larger; (4) right; (5) four;
(6) million; (7) two thirds; (8) most; (9) billion; (10) zinc
Page 27
(1) 6; (2) 22; (3) 9; (4) 32; (5) 7; (6) 9; (7) 7
Answer to joke: Because they mess up the whole house.
Page 28
(1) no; (2) yes; (3) no; (4) yes; (5) yes;
(6) no; (7) yes; (8) no
Page 29
2!0 ; (2) 2^0 or 1#0 ; (3) 2@0 or 1!0 ; (4) 2$0 or !5; (5) 2&0 ;
(6) 2*0 or @5; (7) 2%0 or !4; (8) !2#0; (9) !2^0 or $5; (10) 2)0 or 0
(1)
Pages 30-31
Main Dish
Side Dish
fries
cheeseburger
potato
rice
garden
salad
fries
potato
rice
fries
taco
potato
rice
Beverage
juice
milk
juice
milk
juice
milk
juice
milk
juice
milk
juice
milk
juice
milk
juice
milk
juice
milk
1!8 ; (2) 1!8 ; (3) 1^8 or !3; (4) !1@8 or @3;
(5) 1!8 ; (6) 1$8 or @9 ; (7) 1^8 or !3; (8) 1@8 or !9
(1)
Outcomes
cheeseburger, fries, juice
cheeseburger, fries, milk
cheeseburger, potato, juice
cheeseburger, potato, milk
cheeseburger, rice, juice
cheeseburger, rice, milk
salad, fries, juice
salad, fries, milk
salad, potato, juice
salad, potato, milk
salad, rice, juice
salad, rice, milk
taco, fries, juice
taco, fries, milk
taco, potato, juice
taco, potato, milk
taco, rice, juice
taco, rice, milk