Rounding, comparing, ordering, adding and subtracting decimals

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was. For example, rounding 4.6 to the nearest whole number gives 5.

Front

How do you round a decimal to the nearest whole number?

Back

To round a decimal to the nearest whole number, look at the digit in the tenths place. If it is 5 or greater, round up. If it is less than 5, round down.

Front

What is the purpose of comparing decimals?

Back

Comparing decimals helps determine which number is larger or smaller, which is important in making decisions based on numerical values.

Front

How do you compare two decimals?

Back

To compare two decimals, align them by the decimal point and compare digit by digit from left to right.

Front

What does it mean to order decimals?

Back

Ordering decimals means arranging them from the smallest to the largest or vice versa.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

Front

What is the value of 0.25 in relation to 0.3?

Back

0.25 is less than 0.3.

Front

What is the result of 19.23 - 2.84 - 4.08?

Back

The result is 12.31.

Front

If Carlos rode 15.5 km and Will rode 9.16 km, how much farther did Carlos ride?

Back

Carlos rode 6.34 km farther than Will.