Prime and composite
Which is the only prime number? 7, 12, 15 or 20
The answer is 7.
What is 9x6? You have 20 seconds.
The answer is 54.
56/8 =?. You have 20 seconds.
The answer is 7.
When a number has factors of only one and itself. What is that number called?
It is a prime number.
Which is the only composite number? 7, 11, 15, 19
The answer is 15.
Calculate 67x4. You have 45 seconds.
The answer is 268.
4500/9 =???. You have 45 seconds.
The answer is 500.
When a number has more than two factors, what is it called?
It is a composite number.
The factors of this number are .... 1, 2, 4, 5, 10 and 20. What is the number?
The answer is 20
Calculate 78x7. You have 30 seconds.
The answer is 546.
Using long division. Work out 672/3. You have one minute.
The answer is 224.
The answer in a multiplication problem is called the...
product
List all of the factors for 30 and put them in order. You have 2 minutes.
The answers are .....
1,2,3,5,6,10,15 and 30.
Using four partial products calculate 23x25. You must show your working.
The answer is 575.
WORD PROBLEM -
There are 248 seats in a small esports arena. The arena has 8 sections of seats with the same number of seats in each. How many seats are in each section?
There are 31 seats in each section.
Name all the vocabulary words in a division problem. There are 3 words. You have one minute.
The answer is dividend, divisor and quotient.
List all of the prime numbers up to 20. You have 2 minutes.
The answers are 2, 3, 5, 7, 11, 13, 17 and 19
Using two partial products calculate 54x46. Your working must be correct.
The answer is 2,484
Calculate using long division 4218/3. You have 2 minutes
The answer is 1,402 R2.