Natural numbers - 7th grade (12y) - practice problems
Number of problems found: 257
- Two brothers
The two brothers have a total of 48 nuts. Two thirds of the nuts of the first correspond to 2/5 of the number of nuts of the second. How many nuts does everyone have?
- Mr. Product
The product of the ages of all of Mr. Product children's is 1408. The age of the youngest child is equal to half the age of the oldest child. How many children does Mr. Product have and how old are they?
- Three cottages
141 guests are accommodated in 3 cottages. In the second cottage there are 8 guests more than in the first cottage and in the third cottage there are 14 guests more than in the second cottage. Find out how many guests are staying in the first cottage.
- Girls and boys
In a class of 40, 4/5 are boys, how many are girls?
- Volleyball 2
In a volleyball game, Michael made 4 shots in 8 tries. At this rate, how many shots can he make in 12 tries?
- Lcm and hcf
If the LCM of a and 18 is 36 and the HCF of a and 18 is 2, then a = …
- Box of apples
There are 50 apples in the box. 2/5 of apples are rotten. How many apples are rotten?
Seed germination is 80%. Of the sprouted plants, 8% subsequently die. How many plants does a gardener grow from 1,500 seeds?
- What is 14
What is (-2)4× 34?
Marie-Pier, Frédéric and Simon bump into each other in the street on a Tuesday while the three of them are running. Marie-Pier trains every 3 days, Frédéric every 4 days and Simon every Tuesday. If they all keep up with their training pace, in how many da
- Check divisibility
Put a check under each column to identify whether each number is divisible by 2, 5, 10, 3, 6 or 9. @TB@ 54180#1 624 2700 5605 568 @TE@
- 1/4 of
1/4 of the school's pupils have honors, of which 1/5 have all marks one. How many pupils does the school have if it boasted 12 children with only one?
When dividing the tangerines into packages of 8 or 10, one always remained. How many were there if there were more than 250 and less than 300?
- Lcm = 22 + gcd
The least common multiple of two numbers is 22 more than their greatest common divisor. Find these numbers.
Martina is solving the equation 4x - 11 = 2x + 391. Here are the first steps of her solution. 4x - 11 = 2x + 391 2x - 11 = 391 2x = 402 What did Martina do to get 2x - 11 = 391?
Marshall earns a salary of 36,000 in each year and he receives a $4000 raise Jim and the salary of 51,000 each year and he receives a 1500 rays how many years will it take before Marshall and Jim are in the same salary
- Phone number
Ivan's phone number ends with a four-digit number: When we subtract the first from the fourth digit of this four-digit number, we get the same number as when we subtract the second from the third digit. If we write the four-digit number from the back and
- How many 17
How many fifths are there in four wholes? How many 1/5 are there in 4?
- Athletics team
All athletes in the athletics team from Ostrava can start in four, five, six and seven stages, and no one will be present. How many average athletes are in one athletic group if there are a total of twelve groups in the section? Consider the smallest numb
- Three integers
Three consecutive integers add up to 51. what are these integers?
Natural numbers - practice problems. Examples for 7th grade (seventh).