Download Grade 3 Unit Review Answer Key

Sumner School District
GLE Review Answer Keys
3rd Grade
Unit 1—Data and Statistics (34 possible)
1.
True. Explanations may vary. Look for ideas like “There are 29 students in
Daniel’s class. I added 8 + 7 + 9 + 5 = 29, and 29 is more than 20.” (2)
2.
False. Explanations may vary. Look for ideas like “ There are 4 more
students who chose science. Science has 9 and History has 5. 9 – 5 = 4.” (2)
3.
True. Explanations may vary. Look for ideas like “8 students chose
adventure and 7 students chose mystery.” (2)
4.
27 (1)
5.
tomatoes (1)
6.
carrots (1)
7.
Graph will vary. Points earned for: title (1), key (1), labels on sides (2),
labels on bottom (2), each bar on the graph (4) (Total of 10)
8.
Pictograph will vary. Points earned for: title (1), key (1), each category with
a picture (5) (Total of 7)
9.
Answers will vary. Accept reasonable questions. (2)
10.
bar graph (1)
11.
tally (1)
12.
data (1)
13.
table(1)
14.
pictograph (1)
15.
survey (1)
Unit 2—Algebraic Sense (37 possible)
1.
4 (1)
2.
Answers will vary. Student should describe two patterns accurately.
Patterns may include: same number repeats in the ones’ place down each
column; same number repeats in tens’ place across each row, or any other
acceptable pattern (2)
3.
even (1)
4.
explains that all numbers are divisible by 2 (2)
5.
3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48 (3 for perfect
completion of pattern, 2 for 1 to 3 errors, 1 for 4-6 errors, and 0 for more
than 6 errors)
6.
Answers will vary. Student should describe two patterns accurately.
Patterns may include: same number repeats in the tens’ place across each
row, or same number repeats in ones’ place down each column, or any other
acceptable pattern. (2)
7.
Alike (1). Explanations may vary. Both patterns show an AABBAABB pattern
(1)
8.
Jordan will need 5 black, 15 white, and 15 grey (3)
9.
14, 17 (2) The rule is to +3 (1)
10.
5, 14, 16 (3)
11.
Rule - 2 (1). 11 in first column (1) and 11 in second column (1)
12.
6(1)
13.
4 (1)
14.
1 (1)
15.
20 (1)
16.
15 (1)
17.
3 (1)
18.
equation (1)
19.
prediction (1)
20.
even numbers (1)
21.
number pattern (1)
22.
odd numbers (1)
23.
skip counting (1)
Unit 3—Number Sense (39 possible)
Part 1
1.
527, 702, 725, 3275, 5275 (5)
2.
greater than, less than, equal, greater than, less than (5)
3.
Correct representation of number using blocks (3)
4.
256 (1)
5.
Answers will vary. Accept reasonable sketches (1)
6.
7 Ones, 3 Hundreds, 4 Tens (3)
7.
200 + 90 + 4 (3)
Part 2
8.
Must estimate to receive credit. Rounds 34 to 30 and 18 to 20 then
subtracts. Accept reasonable explanation that includes “no” as the correct
answer. (3)
9.
Correct equation--30 – 12 = 18 (1)
10.
Answers will vary. Must include all parts of the equation in the story. (3)
11.
Team C wins (1)
90 + 38 + 158 = 286 (1)
71 + 102 + 134 = 307 (1)
41 + 207 + 45 = 293 (1)
12.
Yes, Ed’s team would have won (1)
13.
134 (1)
14.
27 (1)
15.
1204 (1)
16.
356 (1)
17.
907 (1)
18.
634 (1)
Unit 4—Number Sense (30 possible)
1.
Shows 3 X 5 = 15; 5 + 5 + 5 = 15 (1 for addition equation, 1 for multiplication
equation, 1 for drawing a picture for a Total of 3)
2.
12 blank cubes and 24 white cubes with 36 cubes altogether. Explanations
will vary. Accept reasonable explanations. (4)
Any of the following arrays: 1 row of 18, 18 rows of 1, 2 rows of 9, 9 rows of
2, 3 rows of 6, 6 rows of 3 (1)
3.
4.
Any two of the following arrays: 1 X 18 or 18 X 1, 2 X 9, 9 X 2, 3 X 6 or 6 X
3 (2)
5.
2 X 3 = 6 (1); 6 ÷ 2 = 3 (1) and 4 X 3 = 12 (1); 12 ÷ 4 = 3 (1)
6.
Sketch should divide the 18 into three groups with 6 items circled. All parts
should be labeled (2)
Sketch should group the 12 into an array of 6 X 2. Sides of the array should
be labeled. (2)
7.
Accept reasonable sketched for the cookies and chips (1)
8.
30 – 6 = 24; 24 – 6 = 18; 18 – 6 = 12; 12 – 6 = 6; 6 – 6 = 0. (1)
9.
Accept reasonable explanation including the correct equation of 30 ÷ 6 = 5
(2)
10.
42 ÷ 6 = 7 and 42 ÷ 7 = 6 (4 points—2 for each correct equation)
Unit 5—Logical Reasoning (27 possible)
1.
Basketball
Toy car
Jump Rope
Video
Tennis ball
Yoyo
(6)
2.
M CC
D C
2 carts, $25
(5 points--2 for correct answer 3 for explanation)
3.
Possibilities:
GP-L-W;GP-L-BL; GP-L-BR; GP-S-W; GP-S-BL; GP-S-BR;
R-L-W; R-L-BL; R-L-BR; R-S-W; R-S-BL; R-S-BR
(3 points for sketching and labeling correct answer, 2 points for approaching
answer and 1 point for attempt)
12 possibilities (1)
Reasonable explanation including correct answer (3). 2 points for
approaching answer or if correct answer was not given and 1 point for
attempt to explain
4.
21 floors (1); Reasonable explanation including correct answer (3). 2 points
for approaching answer or if correct answer was not given and 1 point for
attempt to explain
5.
Mindy, Jan, Anne, Mike, Paula (5)
Unit 6—Number Sense with Whole Numbers (32 possible)
1.
4276, 4627, 4726, 4762 (4)
2.
>(1); <(1); <(1); <(1)
3.
Should sketch four 100’s and 8 10’s (2)
520 + 480 = 1000 (1)
4.
2306 (1)
5.
accept reasonable sketching for correct answer (1)
6.
3000 + 200 + 50 + 9 (1); 5000 + 200 + 8 (1)
7.
9521 (1)
8.
1259 (1)
9.
10.
262 (1)
MUST use estimation. Accept reasonable explanation including correct
estimation (4); explanation without correct estimation (3); approaching
reasonable estimation (2); attempt to explain (1)
11.
Reasonable estimates for all three parts of the solving (3)
12.
Accept reasonable explanations (2)
13.
3111 (1)
14.
8992 (1)
15.
2119 (1)
16.
892 (1)
17.
6725 (1)
Unit 7—Measurement (31 possible)
1.
False (1 )
False (1 )
True (1 )
2.
The line measures 3 1/2 inches (1)
3.
No, they did not get enough border. 15 in. + 8 in. = 23 inches all together.
They needed two feet, which is 24 inches. They are 1 inch short of what
they need for the window.
(3 pts. for explanation including correct answer)
4.
ruler (1 )
5.
yards (1 )
6.
pint > cup (1 ); cup < quart (1 ); gallon = 4 quarts (1 )
7.
thermometer (1)
8.
pounds (1 )
9.
If 1 ton = 2,000 pounds, then 2 tons = 2,000 + 2,000 = 4,000 pounds
2 rhinos = 800 + 800 = 1,600 pounds
3 rhinos = 800 + 800 + 800 = 2,400 pounds
4 rhinos = 800 + 800 + 800 + 800 = 3,200 pounds
5 rhinos = 3,200 + 800 = 4,000 pounds
The truck will fit five rhinos!
(2 pts. ~ 1 pt. for correct work shown and 1 pt. for correct answer)
Part 2:
10.
3 children = $2.50 + $2.50 + $2.50 = $7.50
2 parents = $4.00 + $4.00 = $8.00
1 grandparent = $3.00
So, $7.50 + $8.00 + $3.00 = $18.50
Cost for the family = $18.50
(2 pts. ~ 1 pt. for correct work shown and 1 pt. for correct answer)
11.
4 children = $2.50 + $2.50 + $2.50 + $2.50 = $10.00
Rachel’s dad = $4.00
All together $10.00 + $4.00 = $14.00
Yes. Rachel’s dad brought enough money. He has $15.00 and will spend
$14.00 to go to the show with his four children.
(3 pts. for reasonable explanation including correct answer)
12.
$3.82 is rounded to $4.00; $2.15 is rounded to $2.00; $12.25 is rounded to
$12.00 and $4.00 + $2.00 + $12.00 = $18.00
Tom spent about $18.00
(2 pts. ~ 1 pt. for reasonable work/thinking shown and 1 pt. for correct
answer)
13.
1 dollar = $1.00; 2 quarters = $0.50; 3 dimes = $0.30; and
1 penny = $0.01.
All together that is $1.81 and $1.81 - $1.75 = $0.06
Amount of change = 6 cents
(2 pts. ~ 1 pt. for reasonable work/thinking shown and 1 pt. for correct
answer)
14.
8:15 (1)
15.
21 days (1)
16.
four thirty-two (1)
17.
Any combination of activities that totals 60 min./one hour
Example: Decorate cookies for 20 min., Storytelling for 10 min.
Scavenger Hunt for 20 min., and Clean-up for 10 min.
20 + 10 = 30 and 20 + 10 = 30; 30 + 30 = 60 min. total
(3 pts. for reasonable explanation including correct answer)
Unit 8—Geometric Sense (19 possible)
1.
Any triangle (1)
2.
Any rectangle (1)
3.
No. These shapes are not congruent. They are the same shape, but are
different sizes. In order to be congruent, two shapes have to be the
same size and same shape.
(3 pts. = 1 for correct answer and 2 for reasonable explanation)
4.
This first shape is a square ~ It has 4 sides of equal length and the
opposite sides are parallel. It also has 4 vertices. (2)
This second shape is a trapezoid ~ It has 4 sides with 1 pair of
parallel sides that are opposite of each other. It also has 4 vertices.
(2)
This third shape is a hexagon ~ It has 6 sides of equal length and 6
vertices. (2)
5.
The square is located on the 10 (1)
6.
The triangle is located on the 70 (2 pts. ~ 1 pt. for correct placement
on the line and 1 pt. for labeling with correct number)
7.
Shapes A, B, D (3)
8.
Answers will vary based on choice from #7:
Must show at least one line of symmetry (1)
9.
Quilt Squares A & C (1)
Unit 9—Number Sense with Fractions (22 possible)
1.
1/4 (1); 4/6 (or 2/3 could be accepted as well) (1)
2.
Accept reasonable sketches for the fractions (2)
3.
True (1); False (1)
4.
Accept reasonable sketches to represent the fractions (2)
5.
Answers will vary. Possibilities: 2/4, 3/6, 4/8, 5/10, 6/12, etc.
(2 pts. each – 1 for fraction shown correctly & 1 for fraction written)
6.
True. Each circle has 4 parts and 3 are shaded in to show 3/4 in both
circles. Accept reasonable similar explanation. (3)
7.
Accept reasonable explanation, similar to “Luis ate 1/6 of the pizza. I know
the pizza only had 6 pieces. If Kate ate three of the six pieces, she ate half
of the pizza. There would be 3 pieces left. Then, if Tim ate 2 out of the
remaining 3 pieces of the pizza, there would only be one piece left. So, Luis
only ate 1 out of the 6 pieces of pizza.” (3)
8.
Accept reasonable sketch depicting the 1/3 of 12 raisins. Four of the items
should be noted. (2)
9.
fraction (1)
10.
numerator (1)
11.
equivalent fraction (1)
12.
denominator (1)
Unit 10—Probability and Statistics (24 possible)
1.
Chances will fall at the lower end of the Unlikely range. (1) Accept
reasonable explanation. (2)
2.
Likely (1); Unlikely (1)
3.
B because there are 4 out of 7 chances to get red. Accept reasonable
explanation, including the correct answer (3)
4.
Green (1); the spinner has landed on green more often already so the
chances of it continuing to land on green are high. Accept reasonable
explanations (2)
5.
Accept reasonable sketches that would represent results similar on the
graph (2)
6.
mode is the number 5. (1) there were 10 rolls of a 5 charted in the table. 5
is the roll that has occurred most frequently. Accept reasonable similar
explanations. (2)
7.
Likely (1); Accept reasonable explanations showing that there are two in
four or half the chances to land on red (2)
8.
probability (1)
9.
unfair (1)
10.
possible outcomes (1)
11.
tally (1)
12.
fair (1)
13.
mode (1)