What's Your Sign
Which operation symbol would you use if a word problem asks you to find the "Total" or the "Sum" of two groups?
addition
If you are buying a toy that costs $18, what is the closest to estimate the price to the nearest ten?
$20
If you want to add 21 and 31, what is the smallest "common denominator" you should use to rewrite the fractions?
6. (Because 6 is the least common multiple of 2 and 3)
A standard pencil is 19 centimeters long. If you lay two pencils end-to-end, how many millimeters long are they combined?
Answer: 380 mm.
Logic: 19+19=38 cm. Since there are 10 mm in 1 cm, 38×10=380
What is the standard form of "one hundred six"?
106
Mr. Gallon has four large limbs branching off his body. What unit do these four limbs represent?
Quarts (4 quarts in a gallon).
Which operation symbol is used when you are "sharing" a large number of cookies equally among a group of friends?
division
You have $10. You want to buy a bag of apples for $4.95 and a gallon of milk for $3.10. About how much will your total be?
About $8.00 (5+3)
In the number 12.358, which digit is in the hundredths place?
5 (3 is tenths, 5 is hundredths, 8 is thousandths)
In a PE competition, a student jumped 1.45 meters. The school record is 2 meters. How many centimeters further would the student have to jump to tie the record?
Answer: 55 cm.
Logic: 2.00−1.45=0.55 meters. Since 100 cm = 1 meter, 0.55×100=55 cm
In the number 4,072, what is the value of the 7 in expanded form?
tens
At the very end of Mr. Gallon’s limbs are the smallest units. How many cups are attached to each pint?
2 cups.
In the equation 12 __ 4=3, which symbol is missing to make the statement true?
division
There are 28 students in 4 different classrooms. Estimate the total number of students in the grade level.
About 120 students (30×4).
A baker has 411 cups of flour. How would you write this "improper fraction" as a mixed number?
2 3/4
(4 goes into 11 two times, with 3 left over)
A soccer player drinks 3 cups of water before the game and 5 cups during the game. How many pints of water did they drink in total?
Answer: 4 pints.
Logic: 3+5=8 cups. Since there are 2 cups in 1 pint, 8÷2=4 pints.
Write the standard form for: 5,000+20+8.
5,028. (Students must remember the zero in the hundreds place!)
If you have 2 quarts, how many pints do you have?
4 pints.
In the expression (10+5)×2, which operation must be completed first and why?
10+5 because parentheses are always first in order of operations
What operation symbol goes in the blank to make this equation true?
24÷4=2 __ 3
Multiplication (×). (Both sides equal 6)
Rewrite .458 as a percentage.
45.8%
Three friends find a bag of 45 gold coins. They decide to add 15 more coins they found earlier and then split all the coins equally. Which operation symbols are needed to solve this?
Bonus: How many coins did each friend receive, equally?
Addition then Division.
Bonus: Expression: (45+15)÷3=20.
Write the number 1,250 in word form.
One thousand, two hundred fifty.
A student drinks 1 quart of water and 2 pints of juice. According to Mr. Gallon’s "body," did they drink a full gallon?
No, they drank half a gallon.
Logic: 2 pints = 1 quart. So, 1 quart + 1 quart = 2 total quarts (half a gallon).
This is the the number being taken from in a subtraction equation?
Bonus: What is the number being taken called?
minuend
Bonus: subtrahend
Maya had 50 stickers. She gave 5 stickers to each of her 4 friends. Which two operation symbols would you use, in order, to solve for how many stickers Maya has left?
Bonus: How many does Maya have left.
Multiplication then Subtraction
Formula: 50−(5×4).
What happens to the decimal point in the number 5.25 when you multiply it by 100?
The decimal point moves two places to the right (becoming 525)
A student owes $0.50 for every day a book is late. If the book is 10 days late and they pay with a $10 bill, what operations are needed to calculate their change?
Bonus: How much change is given after paying the fee.
Multiplication (to find the fee) then Subtraction (to find the change).
Bonus: Expression: 10−(0.50×10)=5.
Which number is larger?
A: 3,000+400+5
B: Three thousand, four hundred fifty
B (3,450 is larger than 3,405).
Three "Mr. Gallons" go to a party. How many quarts are there in total?
12 quarts (3×4).
You start with the number 20. You subtract 4, multiply by 2, and then divide by 8. What is your final answer (in 60 seconds)
Answer: 4.
Calculation: 20−4=16; 16×2=32; 32÷8=4
A school bus can hold 52 people. There are 9 buses. If each person pays $1.95 for a ticket, estimate the total amount of money collected for one full trip.
About $900 (50 people×9 buses=450; 450×$2=$900)
Estimate the sum of 2.9 and 4.1. Is the answer closer to 6, 7, or 8?
7 (3 + 4 = 7)
The art club is painting a giant backdrop for the school play. The backdrop is 15 feet long. They want to divide the backdrop into 5 equal sections to paint different scenes. How many inches wide will each section be?
36 inches
1. First, find the length of one section in feet: 15÷5=3 feet per section.
2. Next, convert feet to inches: Since there are 12inches in 1 foot, 3×12=36 inches.
Write the word form for the sum of: (2×1,000)+(15×10)+(4×1).
Two thousand, one hundred fifty-four.
Logic: 2,000+150+4=2,154.
A hiker fills up their water bladder with 2 quarts of water before hitting the trail. According to the Mr. Gallon model, what fraction of a full gallon did the hiker carry, and how many pints is that equal to?
1/2 (one-half) of a gallon; 4 pints.
The Logic: 1. Since there are 4 quarts in a gallon, 2 quarts is exactly half. 2. Since each quart contains 2 pints, 2 quarts ×2 = 4 pints.