Theory
Exercises
| 1. |
Rounding off to nearest tens and hundreds
Difficulty: easy |
3
|
| 2. |
Fill in the nearest hundreds and thousands
Difficulty: easy |
3
|
| 3. |
Check and say true or false
Difficulty: easy |
2
|
| 4. |
Estimate the sum
Difficulty: easy |
3
|
| 5. |
Calculate the difference in population
Difficulty: easy |
3
|
| 6. |
Determine the quotient
Difficulty: easy |
3
|
| 7. |
Determine the reasonable estimation (sum)
Difficulty: medium |
4
|
| 8. |
Choose the reasonable estimation (product)
Difficulty: medium |
4
|
| 9. |
Calculate estimated sum and difference of two numbers
Difficulty: medium |
2
|
| 10. |
Find the number with the help of its estimated value
Difficulty: medium |
4
|
| 11. |
Find the estimated cost
Difficulty: medium |
4
|
| 12. |
Caculate the estimated amount received
Difficulty: medium |
4
|
| 13. |
Determine nearest 10, 100, 1000
Difficulty: hard |
5
|
| 14. |
Estimate the sum and find the difference of acual and estimated value
Difficulty: hard |
5
|
| 15. |
Estimate by general rule
Difficulty: hard |
5
|
Tests
| 1. |
Training test
Difficulty: medium |
9
|
| 2. |
Training test
Difficulty: medium |
10
|