Natural numbers - practice problems - page 5 of 87
Number of problems found: 1736
- Divisible by three
What least value must be assigned to the blank space so that the number 789563 is divisible by 3
- Equation 94
If 9 more than twice a number is 3 less than 3 times the same number. What is the number?
- Fruits
2/3 of the fruits are cherries, and the rest are grapes. I sold 1/2 of the cherries and 1/4 of the grapes. If I had 280 left, how many fruits had I at first?
- Math class
There are a total of 30 students in a math class. The number of boys is 2 more than 3 times the number of girls. How many boys are in this math class?
- With remainder
What is the greatest number that divides 13850 and 17030 leaves a remainder 17?
- Exactly divisibled
Find the least number that can be divided exactly by all the even numbers between 10 and 20
- Ice cream 4
Ice cream sales for a shop in the last 4 months have been 200, 250, 300, and 350. What are the expected sales in the 5th month?
- Unknown number 35
I am a number between 121 and 149. I can be divided by both 3 and 5. What number am I?
- Digits sum
A two digit number is 3 times the sum of its digits. If 45 is added to the number, its digits are interchanged. Find the sum of the digits of the number.
- LCM and HCF 3
LCM of two integers is 1237. What is their HCF?
- LCMs
What is the difference between the LCM (16, 400) and LCM (15, 65)?
- Cardinals and robins
Lee saw c cardinals and 5 robins in his yard. Write the expression that shows the number of birds Lee saw in all.
- Older or younger
The age of a man after 15 years is 4 times the age of that man 15 years before. Find his present age.
- HCF - big numbers
Find the HCF of 72030 and 88200
- Heads and legs 2
There are a number of unspecified numbers of cows and hens in a den. If there are a total of 30 heads and 80 legs in the den, find the number of cows and hens in the den.
- The remainder 3
The remainder is 31 when dividing a number by 45. What would the remainder be if the same number were divided by 15?
- Cows and hens
In a group of cows and hens, the number of legs is 14, more than twice the number of heads. Find the number of cows.
- Cupcakes
Keia and Hiro made a total of 27 cupcakes. Keia made 2 times as many cupcakes as Hiro. How many cupcakes did Hiro make?
- Solve 25
Solve for a in (a+8)/2-3(a+10)/5=1.
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