GCSE Rounding Practice Questions

Identify the first decimal place (tenths)

We are rounding $3.47$ to the $1$ decimal place, so we focus on the first decimal place (tenths).

Look at the next digit to decide

The next digit is $7$, which is $5$ or more, so we round up.

Write $3.47$ rounded to the $1$ decimal place

So $3.47$ rounded to the $1$ decimal place is $3.5$.

Identify the $1$ significant figure

We are rounding $0.0072$ to the $1$ significant figure, so we focus on the $1$ significant figure.

Look at the next digit to decide

The next digit is $2$, which is less than $5$, so we round down.

Write $0.0072$ rounded to the $1$ significant figure

So $0.0072$ rounded to the $1$ significant figure is $0.007$.

Identify the second decimal place (hundredths)

We keep 2 digit(s) after the decimal point.

Look at the next digit

This digit decides whether we round up or leave the kept digit unchanged.

Apply the rounding rule

The next digit is $7$, which is $5$ or more, so we round up.

Adjust the kept digits, carrying if needed

If rounding up makes a $9$ become $10$, carry into the next column.

Keep any trailing zeros in the decimal part

Trailing zeros are kept so the answer clearly shows 2 decimal place(s).

Write 0.8471 to 2 decimal place(s)

So 0.8471 rounded to 2 decimal place(s) is 0.85.

Look at $3365$ to round to the nearest $100$

The next digit is $6$, which is $5$ or more, so we round up.

Round $3365$

$3365$ rounds to $3400$.

Look at $4471$ to round to the nearest $100$

The next digit is $7$, which is $5$ or more, so we round up.

Round $4471$

$4471$ rounds to $4500$.

Look at $3337$ to round to the nearest $100$

The next digit is $3$, which is less than $5$, so we round down.

Round $3337$

$3337$ rounds to $3300$.

Look at $2562$ to round to the nearest $100$

The next digit is $6$, which is $5$ or more, so we round up.

Round $2562$

$2562$ rounds to $2600$.

Add the rounded values

Add the rounded numbers to estimate the total.

State the estimate

The estimated total is $13800$.

Look at $283.1$ to round to the $1$ significant figure

The next digit is $8$, which is $5$ or more, so we round up.

Round $283.1$

$283.1$ rounds to $300$.

Look at $787.1$ to round to the $1$ significant figure

The next digit is $8$, which is $5$ or more, so we round up.

Round $787.1$

$787.1$ rounds to $800$.

Look at $752.0$ to round to the $1$ significant figure

The next digit is $5$, which is $5$ or more, so we round up.

Round $752.0$

$752.0$ rounds to $800$.

Look at $536.2$ to round to the $1$ significant figure

The next digit is $3$, which is less than $5$, so we round down.

Round $536.2$

$536.2$ rounds to $500$.

Look at $456.8$ to round to the $1$ significant figure

The next digit is $5$, which is $5$ or more, so we round up.

Round $456.8$

$456.8$ rounds to $500$.

Look at $68.2$ to round to the $1$ significant figure

The next digit is $8$, which is $5$ or more, so we round up.

Round $68.2$

$68.2$ rounds to $70$.

Add the first group of rounded values

Add the first half of the rounded numbers.

Add the second group of rounded values

Add the second half of the rounded numbers.

Combine the two subtotals

The estimated total is $2970$.