Estimating and Calculating Differences

What would be a reasonable difference for 47,174 - 27,812

• 10,000

• 60,000

• 20,000

• 35,000

A satellite moves at a speed of 27,950 kilometers per hour. A satellite at a higher orbit travels at a speed of 11,190 kilometers per hour. ABOUT how much faster is one satellite than the other?

• about 10,000 kilometers per hour

• about 35,000 kilometers per hour

• about 17,000 kilometers per hour

• about 40,000 kilometers per hour

What would be a reasonable difference for 753,265 - 451,057

• about 200,000

• about 30,000

• about 500,000

• about 300,000

In a local election, 131,201 people voted for the winning candidate. If she won by 29,288 more votes, ABOUT how many votes did the other candidate receive?

• about 100,000

• about 160,000

• about 30,000

• about 20,000

Jeremy earned 1,543 points in Level 1 of his video game. In Level 2, he lost 231 points. How many points does Jeremy have left? (Need exact answer, not estimate)

(a)  

Tags

CCSS.4.OA.A.3

Harold had 3,454 points. He lost some of his points. Now, he has 2,122 points. How many points did Harold lose? (need exact answer, not estimate)

(a)  

Tags

CCSS.4.OA.A.3