Unit 3 Math Test Review - estimation and problem solving

Front

What is estimation in math?

Back

Estimation is a method used to find an approximate value that is close to the exact amount. It helps in making quick calculations without needing precise numbers.

Front

How do you solve a subtraction problem?

Back

To solve a subtraction problem, you take the smaller number away from the larger number. For example, in 10 - 4, you subtract 4 from 10 to get 6.

Front

What does it mean to multiply by 2?

Back

Multiplying by 2 means to double a number. For example, 3 multiplied by 2 equals 6.

Front

What is a rule in an input/output table?

Back

A rule in an input/output table describes how the input numbers are transformed into output numbers, such as adding, subtracting, multiplying, or dividing.

Front

How do you find the missing number in a table?

Back

To find the missing number in a table, look for patterns or rules that apply to the other numbers in the table.

Front

What is the result of 2.74 – 0.816?

Back

The result of 2.74 – 0.816 is 1.924.

Front

How do you calculate 10,000 – 1,486?

Back

To calculate 10,000 – 1,486, subtract 1,486 from 10,000 to get 8,514.

Front

What does division mean?

Back

Division is the process of splitting a number into equal parts. For example, 8 divided by 2 means splitting 8 into 2 equal parts of 4.

Front

What is the purpose of estimation in problem solving?

Back

Estimation helps to quickly assess whether an answer is reasonable and to simplify calculations.

Front

What is the difference between addition and subtraction?

Back

Addition combines numbers to find a total, while subtraction takes one number away from another.