This week we have been looking at 'halfway' and rounding.

Question: What number is halfway between 63 and 103?

Step One: Find the difference between 63 and 103 by counting on in tens from 63 to 103.

Step Two: Divide the difference by 2 (half)

Step Three: Add this number to the original.

Step One: 63 +

Step Two: 40 divided by 2= 20

Step Three: 63 + 20 = 83

Halfway between 63 and 103= 83

Question: Round 63 to the nearest lot of ten

Step One: What lots of ten are either side of 63?

Step Two: What is halfway between 60 and 70?

Step Three: Is 63 less than, equal to or more than 65?

Step Four: Round to the lower lot of ten.

Step Two: 65 is halfway between 60 and 70

Step Three: 63 is less than 65.

Step Four: 63 is closer to 60 than 70.

The nearest lot of ten to 63=60

This can all be plotted on a number line to help. See the picture

__Finding numbers that are halfway between two lots of numbers__**Method**Question: What number is halfway between 63 and 103?

Step One: Find the difference between 63 and 103 by counting on in tens from 63 to 103.

Step Two: Divide the difference by 2 (half)

Step Three: Add this number to the original.

**Example**Step One: 63 +

__40__= 103Step Two: 40 divided by 2= 20

Step Three: 63 + 20 = 83

Halfway between 63 and 103= 83

__Rounding numbers to the nearest lot of ten__**Method**Question: Round 63 to the nearest lot of ten

Step One: What lots of ten are either side of 63?

Step Two: What is halfway between 60 and 70?

Step Three: Is 63 less than, equal to or more than 65?

Step Four: Round to the lower lot of ten.

**Example**

Step One: 60 and 70 (draw a number line to help if necessary)Step Two: 65 is halfway between 60 and 70

Step Three: 63 is less than 65.

Step Four: 63 is closer to 60 than 70.

The nearest lot of ten to 63=60

This can all be plotted on a number line to help. See the picture