In Estimator Quiz and Estimator Four, questions are designed to help the user practice estimating the results of addition, multiplication, and percentage, and to prepare them for questions of various levels of difficulty. Questions are categorized by a combination of level (which determines the difficulty) and by types of problems listed. These different categories are defined in two different organizational structures. The first organization looks at problem types, then considers how problems vary by level within that type. The second organization considers the difficulty level first, then looks at different problem types within that level. All number ranges are inclusive. Both are provided below.
Descriptions by Problem Type:
Addition:
- Level 1: Estimate the sum of two whole numbers between 100 and 999.
- Level 2: Estimate the sum of three whole numbers between 100 and 999.
- Level 3: Estimate the sum of four whole numbers between 100 and 999.
Multiplication:
- Level 1: Estimate the product of two whole numbers between 11 and 99.
- Level 2: Estimate the product of a whole number between 11 and 99 and a whole number between 100 and 999.
- Level 3: Estimate the product of two whole numbers between 100 and 999.
Percentage:
- Level 1: Estimate a percentage of a number between 1 and 999. The percentage will be a multiple of 5 between 5 and 95.
- Level 2: Estimate a percentage of a number between 1 and 999. The percentage will be an integer between 1 and 99.
- Level 3: Estimate the percentage of the sum of two numbers between 11 and 999. The percentage will be an integer between 1 and 99.
Descriptions by Difficulty Level:
Level 1:
- Addition: Estimate the sum of two whole numbers between 100 and 999.
- Multiplication: Estimate the product of two whole numbers between 11 and 99.
- Percentage: Estimate a percentage of a number between 1 and 999. The percentage will be a multiple of 5 between 5 and 95.
Level 2:
- Addition: Estimate the sum of three whole numbers between 100 and 999.
- Multiplication: Estimate the product of a whole number between 11 and 99 and a whole number between 100 and 999.
- Percentage: Estimate a percentage of a number between 1 and 999. The percentage will be an integer between 1 and 99.
Level 3:
- Addition: Estimate the sum of four whole numbers between 100 and 999.
- Multiplication: Estimate the product of two whole numbers between 100 and 999.
- Percentage: Estimate the percentage of the sum of two numbers between 11 and 999. The percentage will be an integer between 1 and 99.