2023/2024 - Math Challenge Set #2

Kiesha's room has 5 windows in a row. In how many different ways can she leave exactly two of the five windows open so that no two windows next to each other are both open?

Mathematical Equivalence

ON

Peyton was supposed to add 4 to the number on the board and then multiply the result by 3. Instead, Peyton added 3 to the number on the board and then multiplied the result by 4. Peyton got an answer of 48. What answer would Peyton get if he solved the problem correctly?

Mathematical Equivalence

ON

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

At the beginning of today, Trent's ice cream truck had three times as many lemon ice cups as strawberry ice cups. Every hour, he sold 9 lemon ice cups and 4 strawberry ice cups. After 12 hours, he sold all of the strawberry ice cups and closed his ice cream truck. How many lemon ice cups did he have left at the end of the day?

Mathematical Equivalence

ON

Mathematical Equivalence

ON

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

On the first day of school, there are 21 students in Mrs. Lopez's class. Among them there are 3 new students who don't know anyone yet. The rest of the students all know each other. Mrs. Lopez asks any two students who don't know each other to shake hands once. Students who already know each other don't shake hands. How many handshakes are there?

Mathematical Equivalence

ON

Tags

CCSS.HSF.BF.A.2

Natalie's mom is 24 years older than Natalie. Three years ago, Natalie's mom's age was 9 times Natalie's age. How old is Natalie now?

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.8C

The distance from Mrs. and Mrs. Smith's home to the city library is 9 miles. It takes Mrs. Smith 20 minutes to drive to the city library from their home. Mr. Smith drives 18 miles per hour faster than Mrs. Smith. How many minutes does it take Mr. Smith to drive to the city library from their home?

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

In the subtraction problem below, the same letters represent the same digit, and different letters represent different digits. What 3-digit number does ABC represent?

Mathematical Equivalence

ON

Tags

CCSS.7.NS.A.3

Each of the 4 boxes in the picture contain9 tiles numbered from 1 to 9. How many different ways are there to pick 4 tiles, each from a different box, so that the product of the four numbers is 420?

Mathematical Equivalence

ON

Mathematical Equivalence

ON

Tags

CCSS.7.EE.B.3