Rounding numbers

©Mathematics Education Centre, Loughborough University

Strategy

Use a viewer to remember• which digit is to be rounded• which digit is to be examined

©Mathematics Education Centre, Loughborough University

Use a viewer

Place over number to be rounded

Digit to be rounded

Digit to be rounded

Digit to be checked

Digit to be checked

©Mathematics Education Centre, Loughborough University

One decimal place

1 2 . 3 6 5 7

Is this digit 5

or more ?

Is this digit 5

or more ?

Round upYES

1 2 . 4 ©Mathematics Education Centre,

Loughborough University

One decimal place

2 5 . 9 2 4

Is this digit 5

or more ?

Is this digit 5

or more ?

Leave unchangedNO

2 5 . 9 ©Mathematics Education Centre,

Loughborough University

Two decimal places

1 2 . 3 6 5 7

Is this digit 5

or more ?

Is this digit 5

or more ?

Round upYES

1 2 . 3 7 ©Mathematics Education Centre,

Loughborough University

Nearest whole number

6 5 .8 5

Is this digit 5

or more ?

Is this digit 5

or more ?

Round upYES

6 6 ©Mathematics Education Centre,

Loughborough University