Count by tens and ones to find the sum of 36+28

Use the number line to show you thinking

Mrs. Sullivan had 18 erasers at the end of the day. She remembered giving out 14 and getting back 11, then giving out 13 and getting back 14. How many erasers did she start with?

The thickness of a surfboard relates to the weight of the surfer. A surfboard is 21 3/16 inches wide and 2 3/8 inches thick. Write each dimension as a decimal.

How do you calculate the exterior angle of a decagon

What is the mean of this 15, 16, 15, 13, 19, 20, 21 what is the answer? A: 15 B: 16 C: 17 D: 18

Zhang Li solves the equation below by first squaring both sides of the equation. - 4=/sqrt{5z+7}-4 = 5z+7 minus, 4, equals, square root of, 5, z, plus, 7, end square root What extraneous solution does Zhang Li obtain?

Which expression represent the distance between - 3 and 5 on the number line.

Mateo begins his dive at sea level. He dives down 15 meters, and then rises up 4 meters. He dives again, going down 7 meters. Which equation models Mateo's movements, and uses the commutative property?

The sum of Lisa's age and John's age is 30. Lisa is 6 years less than twice as old as John. What are their ages

Darrin put the numbers 7.25, 7.52, 5.72 and 5.27 in order from the greatest to the least. Is his work correct? Explain.

Which expression is equivalent to 7 b + 4 b minus 1 b? A. 2b B. 4b C. 10b D. 12b