Natural numbers - practice problems - page 4 of 83
Number of problems found: 1648
- 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. - 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. - 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. - Evaluate expressions
Which expression equals 12? ... - 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. - 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. - The sum 32
The sum of three consecutive odd numbers is 33. What are the three consecutive odd numbers? - I added
I added 10 to 3 times a number; the result is equal to 4 times the number. What is the number? - 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 - Human population
The populations of two cities after t years can be modeled by -150t+50,000 and 50t+75,000 . What is the difference in the populations of the cities when t=4? - A teacher 3
A teacher gives pens and pencils to elementary students at an equal rate, each classroom. Pencils; Pens 18 ; 72 29 ; A 35 ; 140 B ; 168 Determine the missing value for the letter B. - Fibonacci numbers
If the first three Fibonacci numbers are given as x1 = 1, x2 = 1, and x3 = 2, then what is the least value of n for which x(n) > 500? - Multiple numerical bases
Find the value of x for which 312four+52x=96ten . Hint: four, x, and ten are the base of the given number.
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