Whole Numbers
Operations
Mental Calculation( NO PAPER OR POINTS WILL BE DEDUCTED)
Fraction Operations
Math Riddles(500 Points Each)
100

Common factor of 39 and 54 that is greater than 1

3

100

Joe has $960. If Rick had another $240, he would have twice as much money as Joe. How much less money does Joe have than Rick?

Joe has $720 less than Rick

100

2072 - 998 - 997

77

100

Mrs. Jees ordered a cake for her family. She ate 1/8 of it and her two sons ate 1/4 of it. What fraction of the cake was left?

5/8 of the cake was left

100

Find 3 different whole numbers which add and multiply each other to the same resulting number. 

Ex: 5x4x7 = 140 , 5+4+7 = 16, however make it so the sum and product are equal so a*b*c = a+b+c

1,2, and 3

200

What is the difference between the sum of the first 2 multiples of 9 and the 3rd multiple of 6.

9

200

I am thinking of two numbers. Their sum is 1,544 and difference is 152. What are the two numbers?

Smaller number is 696 

Larger number is 848

200

563 + 456 - 99 - 256

664

200

Melvin gave 7/12 of his stamps to his cousin. He gave 1/3 fewer stamps to his neighbor. What fraction of his stamps did Melvin give away?

Melvin gave 5/6 of his stamps away.

200

What single digit appears most frequently between and including the numbers one and a thousand? Hint: Look for a pattern!

The number 1

300

What is the smallest whole number that is divisible by 4, 8, and 11

88

300

Bob, Jean, and Paul have a total of 5,590 stickers. Paul has twice as many stickers as Bob. Bob has 3 times as many stickers as Jean. How many stickers does each one have?

Jean has 559 stickers.

Bob has 1,677 stickers.

Paul has 3,354 stickers.

300

47 x 299

14,053

300

James ate 2/5 of a cake and Lisa ate 1/10 more cake than he did. What fraction of the cake remained?

1/10 of the cake remained.

300

I add six to eleven, and get five. Why is this correct?

When it is 11:00 AM, add 6 hours and you get 5:00 PM

400

P is a number. After multiplying it by 7 and adding 4 to the answer, the result is the 13th multiple of 3. What is P?

P = 5

400

Phil had 3 times as much money as Anne. After Phil gave $285 to Anne, he had twice as much money as she did. How much money did Phil have at first?

Phil had $2,565 at first.

400

45 x 36 + 55 x 36

1,200

400

A fruit seller sold 1/7 of his fruits to a hotel owner. He sold 1/3 of the remaining fruits to a grocer. He donated the rest of the fruits to a children's home. 

*ANSWER BOTH PARTS FOR FULL CREDIT*

a) What fraction of the fruits were sold to the grocer?

b) What fraction of the fruits were donated to the children's home?

a) 2/7 of the fruits were sold to the grocer.

b) 4/7 of the fruits were donated to the children's home

400

One brother says of his younger brother: “Two years ago, I was three times as old as my brother was. In three years time, I will be twice as old as my brother.” How old are they each now?

They will be 20 and 10.

500

I am thinking of a remainder from 40 to 60. When it is divided by 5, it leaves a remainder of 3. When it is divided by 4, it leaves a remainder of 1. What number am I thinking of?

53

500

There were twice as many women as men in the hall. After 350 women left and 450 men entered, there were 3 times as many men as women. If 1,000 adults remained, how many adults were there in the hall at first?

There were 900 adults in the hall at first.
500

25 x 32 x 125

100,000

500

A rich man gives 3/10 of his wealth to his wife. He gives 3/7 of his remaining wealth to his children and donates the rest to charity. 

*ANSWER BOTH QUESTIONS FOR FULL CREDIT*

a) What fraction of his wealth does he give to his children?

b) What fraction of his wealth does he donate to charity?

a) he gives 3/10 of his wealth to his children

b) he donates 2/5 of his wealth to charity

500

Using only addition, add eight 8s to get the number 1,000.

888 + 88 + 8 + 8 + 8 = 1,000

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