How do I explain to my 8yr old the following question:

Which number has the same value as 28 tens?

28

280

2800

2810

One number is four more than twice a second number their differences is eleven find two numbers

Convert 74.69 to expanded form

A submarine starts out at sea level and descends vertically at a rate of 20 ½ feet per second. Write an equation and solve to find out how long it takes for the submarine to reach - 120.4 feet? Round your answer to the nearest whole number.

Sarah has 30090 cupcakes she sold 3000 cupcakes but she made 500 more how many does she have

Carlo has 35 stamps. Some are valued at 2 cents, others at 5 cents and the remainder at 10 cents. He has 3 times as many 5 cent stamps as he has 2 cent stamps and the total value of all stamps is $1.89. How many of each stamp does he have?

3. "a varies directly with b". If a = 4 when b = 21, find a when b-7.

Evaluate the expression using order of operations 8-3[{4+2}+6]=?

Let n be a prime number. Which of the following statements CAN be true? A. n is a perfect square B. n is even C. n is irrational D. nis negative E n is divisible by 4

Katie practiced the flute for 45 minutes. Then, she ate a snack for 15 minutes. Next, she watched televison for 30 minutes, until 6:00 P. m. At what time did Katie start practicing the flute?

The vertex form of the equation of a parabola is y = (x+3) ^2+53. what is the standard form?