Round 225 to the nearest ten.

Round 625 to the nearest hundred.

Is this equation true or false? 139+141 = 140+142

Solve the equation and show your work using an efficient strategy. 405 + 112 = c

Round 76 to the nearest ten and hundred?

Round 318 to the nearest hundred.

Round 166 to the nearest hundred.

Solve the equation and show your work using an efficient strategy. 164 - 143 = f

What does n equal? 543+529 = n+530

Pick any two numbers from this set to answer the question below: (460 300 170 342) Which two numbers can you add to get closest to 500?

Is this equation true or false? 231-219 = 232-220

What two numbers from the set below will get you closest to 1,000? (655 300 213 525) Explain your answer.