Halloween Math & Reading — Answer Key
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
A pumpkin patch sold 150 pumpkins at $4.50 each and earned $675.50 total.
Corrected: A pumpkin patch sold 150 pumpkins at $4.50 each and earned $675.00 total.
The corrected sentence is: "A pumpkin patch sold 150 pumpkins at $4.50 each and earned $675.00 total." The error was decimal multiplication error — 150 × 4.50 = 675.00, not 675.50: the original sentence "A pumpkin patch sold 150 pumpkins at $4.50 each and earned $675.50 total." needed to be fixed.
2. Fix the sentence:
A spider spun 56 of a web on Monday and 13 more on Tuesday, finishing 69 of the web total.
Corrected: A spider spun 56 of a web on Monday and 13 more on Tuesday, finishing 76 or 116 webs total.
The corrected sentence is: "A spider spun 56 of a web on Monday and 13 more on Tuesday, finishing 76 or 116 webs total." The error was fraction addition — failed to find common denominator before adding: the original sentence "A spider spun 56 of a web on Monday and 13 more on Tuesday, finishing 69 of the web total." needed to be fixed.
3. Fix the sentence:
Twelve bags of candy weigh 2.4 kg each, so the total weight is 28.4 kg.
Corrected: Twelve bags of candy weigh 2.4 kg each, so the total weight is 28.8 kg.
The corrected sentence is: "Twelve bags of candy weigh 2.4 kg each, so the total weight is 28.8 kg." The error was decimal multiplication error — 12 × 2.4 = 28.8, not 28.4: the original sentence "Twelve bags of candy weigh 2.4 kg each, so the total weight is 28.4 kg." needed to be fixed.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. A number like 325, which has a whole number and a fraction, is called a mixed number.
A mixed number combines a whole number with a fraction, like 325, which means 3 whole parts plus 25 of another part.
2. To compare 0.6 and 0.45, you look at the tenths place first.
When comparing decimals, start with the tenths place (the first digit after the decimal point). Since 0.6 has 6 tenths and 0.45 has 4 tenths, 0.6 is larger.
3. The top number of a fraction is called the numerator.
The numerator sits on top of the fraction bar and tells how many parts you have. In 34, the numerator is 3.
4. When you multiply a decimal by 100, the decimal point moves two places to the right.
Multiplying by 100 shifts the decimal point two places to the right. For example, 0.45 x 100 = 45.
Part C: Short Answer
Answer each question in one or two complete sentences.
1. A vampire has 214 liters of potion and uses 34 of a liter for a spell. How much potion is left? Show your work.
Sample answer: Convert 214 to 94. Then subtract: 94 − 34 = 64 = 124 = 112 liters of potion are left.
A good answer includes: Convert 214 to 94. Then subtract: 94 − 34 = 64 = 124 = 112 liters of potion are left.
2. A haunted hayride charges $8.25 per ticket. If a family of 6 buys tickets, what is the total cost?
Sample answer: Multiply 6 × $8.25. 6 × 8 = 48, and 6 × 0.25 = 1.50. So $48 + $1.50 = $49.50 total.
A good answer includes: Multiply 6 × $8.25. 6 × 8 = 48, and 6 × 0.25 = 1.50. So $48 + $1.50 = $49.50 total.