Natural numbers - practice problems - page 6 of 91
Number of problems found: 1804
- The sum 50
The sum of five consecutive integers is 385. Which one of these five integers is prime? - Five and four
Five divided by four times the number is 0.25. What is that number? - Twice the unknown
I am twice a number. If -8 is subtracted from me, the answer is 6. What am I? - Evaluate expressions Which expression equals 12? ...
- The sum 32 The sum of three consecutive odd numbers is 33. What are the three consecutive odd numbers?
- Simple equation 12 Three times a number divided by 2 plus 5 equals 20. Find the number.
- Divisor of two numbers Find the (greatest common) divisor of 18 and 45.
- The difference 4 The difference between four times a number and five is the same as three more than twice a number. Find the number.
- The remainder
Find the remainder if 17²00 is divided by 18. - Twice 2 Twice the difference between a number and 3 is equal to three times the sum of the number and 8. Find the number.
- I added
I added 10 to 3 times a number; the result is equal to 4 times the number. What is the number? - The number 88 Write the number 88 as a product of prime factors.
- The difference 6
The difference between a number and 15 is multiplied by -3, and the result is - 30 - The sum 38 The sum of two decimal numbers is four. Their difference is one. What are the numbers?
- Distributive property 2
Show with a drawing that 5 × (6 + 2) = 5 × 6 + 5 × 2. What is the name of this property?
- Planetary system
Robert has built a mechanical model solar system with three balls representing planets at the end of rods. Each rod is attached to the center, representing the Sun. The planets are lined up when he turns on the motor. The innermost planet makes a revoluti - Fruits
(I) bought three apples, two oranges, four pears, and five bananas, which in total cost £3.73. (i) I bought twenty-one apples, no oranges, eight pears, and fifteen bananas, which in total cost £7.57. (i) I bought one apple, eighteen oranges, fourteen pear - Of three
Of three positive numbers the product of the first and second is 42, second and third is 56 and that of third and first is 48. Find the third number. - A person 3
A person distributes his pens among four friends A, B, C and D in the ratio 1/3 : 1/4 : 1/5 : 1/6. What is the minimum number of pens that the person should have? - The product 18
The product of two consecutive natural numbers which are multiples of 3 is equal to 810. Find the two numbers.
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