1. When you get a question right, click a shell to reveal your score.

2. 515 10 20 Question 1: The answer to a subtraction problem is the … Difference

3. 5151020 Question 2: Ms. Bernstein saved $36,700 this year. Last year, she saved $29,625. How much more did Ms. Bernstein save this year than last year? $7,075

4. 5151020 Question 3: What is a number not evenly divided by 2 called? It has 1,3,5,7,or 9 in the ones place A Prime Number

5. 5151020 Question 4: The answer to an addition problem is called … The sum

6. 515 10 20 Question 5: What is it called when I calculate using rounded numbers; useful for mental math? Estimating

7. 5 151020 Question 6: What is a number that can be evenly divided by 2; it ends with 0,2,4,6, or 8? An even number

8. 5151020 Question 7: Ms. Bernstein needed 3.25 yards of material for a sewing project. She had 1.75 yards left from her last project. How many more yards of material does Ms. Bernstein need? 1.50 yards

9. 5 151020 Question 8: Mrs. Pace went shopping with $50. She bought a CD for $12.89 and a pair of sandals for $21.25. About how much money does Mrs. Pace have left? About $16

10. 5151020 Question 9: Three chains are 2.75 m, 3.4 m, and 5.86 m long. The chains are linked together. What is the length of the full chain? 12.01 m

11. 5151020 Question 10: Coach Roberts filled a 12- gallon cooler with a sports drink. The team drank 8.75 gallons during the game. How much of the sports drink was left? 3.25 gallons

12. 5151020 Question 11: The average precipitation in Texas ranges from 60.57 inches in Jasper County to 9.43 inches in El Paso. How much greater is the amount of precipitation in Jasper County than El Paso? 51.14 inches

13. 515 10 20 Question 12: Ms. Beckworth rounded 6.545 meters to 6.55 meters. What place did Ms. Beckworth round to? Hundredths

14. 5151020 Question 13: Ms. Bernstein bought a dress on sale for $56.75. The regular price of the dress was $71.99. What is the best estimate of how much Ms. Bernstein saved on buying the dress on sale? About $15

15. 5151020 Question 14: What is 9.351 rounded to the nearest tenth? 9.4

16. 5151020 Question 15: What is the sum? 14.89 + 3.506 + 6.23 24.626

17. 5 151020 Question 16: In 2000, the population density of the state of Texas was about 79.649 people per square mile. What is this number rounded to the nearest ones? 80

18. 5 151020 Question 17:Compare 0.89 __ 0.809 0.89 > 0.809

19. 515 10 20 Question 18: Mrs. Miles, Mr. Hagar, Mrs. Stoever, and Ms. Bernstein ran the 4-man relay race for field day. Mrs. Miles averaged a time of 1.8 minutes for her part of the race, Mr. Hagar averaged 2.25 minutes, Mrs. Stoever averaged 2.1, and Ms. Bernstein averaged 1.66 minutes. What is a reasonable total time to estimate that they will run in their next race? About 8 minutes

20. 5151020 Question 19: What is the estimated sum, rounded to the nearest hundred thousand? 4,256,090 + 3,621,982 About 7,900,000

21. 5151020 Question 20: What is 549,000 rounded to the nearest thousand? 500,000