# Rounding to the nearest tenth

### Purpose:

The purpose of this activity is to help your child to learn to round to the nearest tenth.

### Link to the Number Framework:

Place value, Stage 7

### What you need:

• Supermarket receipt
• Pen and paper
• Calculator

### What to do:

• Give your child a supermarket shopping receipt and look at the prices together.
• Ask them to round the prices to the nearest ten cent.
• Remember that it is a mathematical convention to round 5 up to 10 although some supermarkets round 5 down to the nearest ten. (For example, Pak'n Save, New World and Four Square)
• Write down the prices rounded to the nearest ten cents.
• Ask your child to add up the rounded prices using a calculator. See how close it is to the actual cost.

### What to expect your child to do:

• To round numbers to the nearest tenth.

### Variation:

• Round other decimals to the nearest tenth. For example, measure lengths (in metres and centimeters) and round to the nearest 10 centimeters.

### He Kupu Māori:

 dollar tāra cent hēneti round (a number) whakaawhiwhi (-a) rounded price utu whakaawhiwhi receipt rīhiti supermarket hokomaha