Determining Unknowns
What is 6×?=30
5
Is the number 27 even or odd?
Odd
Is 24 a multiple of 3? Explain why or why not.
Yes, because 24÷3=8 with no remainder.
What is the next number in the pattern: 2, 4, 6, __?
8
If 6 students each have 2 apples, how many apples do they have in total?
12
If ?÷4=5, what is the unknown number?
20
Explain why 42 is an even number using place value.
42 is even because it ends in 2, which is an even digit.
Find a multiple of 5 that is between 1 and 50
10 (other acceptable answers: 5, 15, 20, 25, 30, 35, 40, 45)
Extend the pattern: 5, 10, 15,___ ,___
20, 25
There are 5 teams with 8 players each. How many players are there in total?
40 players
What number can replace the question mark in ?−15=10?
25
What is the pattern of even numbers from 1 to 20?
2, 4, 6, 8, 10, 12, 14, 16, 18, 20
Is 48 a multiple of 8?
Yes, because 48÷8=6 with no remainder.
Describe the ordinal position of the number 8 in the sequence: 2, 4, 6, 8, 10.
8 is the 4th number in the sequence.
If a pizza is cut into 12 slices and 3 friends want to share it equally, how many slices does each friend get?
4 slices each
If 9×?=72, what is the unknown number?
8
Is 1000 even or odd? Explain your reasoning.
Even, because it ends in 0, which is an even digit.
What is the largest multiple of 6 that is less than 50?
48
Create a pattern using addition that starts with 1 and ends with 10.
1, 2, 3, 4, 5, 6, 7, 8, 9, 10 (adding 1 each time).
A group of students needs to form 4 teams with 11 players each. How many players are needed in total?
44 players
Solve for ?÷3=12.
36
Determine if 735 is even or odd, and describe how you know.
Odd, because it ends in 5, which is an odd digit.
Explain how to find if 72 is a multiple of 9.
Divide 72 by 9: 72÷9=8 with no remainder, so it is a multiple.
What is the pattern if you multiply 3 by ordinal numbers: 1st, 2nd, 3rd?
3, 6, 9 (3 times 1, 2, and 3).
If you have 50 marbles and you want to divide them into bags with 5 marbles each, how many bags do you need?
10 bags