Halloween Math & Reading — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. A shape with three sides and three angles is called a triangle.
The prefix "tri" means three, so a triangle is named for having exactly three sides and three angles.
2. The distance around the outside of a shape is called its perimeter.
Perimeter measures the total distance around the outside edge of a shape, found by adding up the lengths of all its sides.
3. The amount of space inside a flat shape is measured in square units and called the area.
Area measures how much surface a flat shape covers, which is why it is counted in square units like square inches or square centimeters.
4. The amount of space a three-dimensional shape takes up is called its volume.
Volume measures how much space a 3D object occupies, expressed in cubic units like cubic centimeters or cubic feet.
5. There are 100 centimeters in one meter.
The prefix "centi" means one hundredth, so there are exactly 100 centimeters in every meter.
6. One kilogram equals 1000 grams.
The prefix "kilo" means one thousand, so one kilogram is equal to exactly 1,000 grams.
7. To find the volume of a rectangular box, multiply length × width × height.
Volume of a rectangular box requires all three dimensions: length x width x height, because you need to account for the space in every direction.
8. A line that divides a shape into two equal halves that are mirror images is a line of symmetry.
A line of symmetry splits a shape into two halves that are exact mirror images; if you folded the shape along this line, both sides would match perfectly.
9. An angle that measures exactly 90 degrees is called a right angle.
A right angle measures exactly 90 degrees and looks like the corner of a square or a book. It forms an L shape.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
A pumpkin box is 2 ft × 3 ft × 4 ft
→ 24 cubic feet
36 square inches
A square graveyard fence is 10 m on each side
→ 40 meters
3 liters
A spider web covers a 6 in × 6 in area
→ 36 square inches
40 meters
A cauldron holds 3,000 mL of potion
→ 3 liters
24 cubic feet
Correct matches: A pumpkin box is 2 ft × 3 ft × 4 ft → 24 cubic feet; A square graveyard fence is 10 m on each side → 40 meters; A spider web covers a 6 in × 6 in area → 36 square inches; A cauldron holds 3,000 mL of potion → 3 liters.