## Hands-on maths; rounding numbers

Free printable number strips below.

While I have a moment I thought I’d continue to post about our maths activities with free printables for each activity.

Using a number line to teach children the concept of rounding to the nearest 10, 100 or 1000 helps to make the concept a little clearer. I printed out these number strips and used a hole punch to make holes above each number. The children select a number card, poke a golf tee into the hole closest to that number and then count the holes or hops it takes to reach the nearest 10/100/1000 in each direction. The smaller the number of hops, the closer the number and therefore they know which way to round; up or down.

This skill requires a firm grasp of number order and an understanding of place value in order for a child to be successful. The printable strips start with a blank space so that they overlap slightly and can be laid out in one long number line 0 to 100, 100 to 1000 and 1000 to 10000.

For your free printable number lines and number cards click here:

number-line-for-rounding-to-10s

number-line-for-rounding-to-100s

number-line-for-rounding-to-1000s

## The twins have arrived!

Our precious little twins arrived last Sunday at 33 weeks gestation. After a quick and safe double breach birth our little ladies are going well and will spend the next several weeks in hospital growing and learning to feed. We praise God for answered prayer and the amazing blessing of two new little girls to add to our family.

## Hands-on maths; ordinal number

(Free printable ordinal number cards below)

For a child who has a strong grasp of numbers and number order, ordinal number is a simple concept. Applying the labels of first, second, third etc. is something that children are exposed to in their everyday life. Every child is familiar with the phrase “Me first!”

This activity tray takes the concept of ordinal number and gives children practise in using it to label the order of runners in a race, months of the year and days of the week.

For your free printable ordinal number cards and awards click here: days of the week & months of the year and here: race track & position ribbons.

For more hands-on maths ideas see my free printables for addition, subtraction, and solving for the unknown.

## Hands-on maths; subtraction activity trays

(Free printable subtraction cards below)

Today I am continuing with my hands-on maths series (addition here, solving for the unknown here) with subtraction activities for hands-on learning. This (above) is what the “activity centre” looks like on my shelves. I would love to have it all spread out on individual trays but there is just not enough room. A simple plastic box and re-purposed desk organiser do the job and the children take out the materials they wish to use for the day.

You can use any materials you like but it is helpful if there is some way to clearly show that they have been subtracted or taken away. I have out wooden craft pictures that are turned over as they are subtracted, miniature fruit erasers that stand up and are then laid down as they are taken away, double sided 2-colour counters, Duplo blocks and some random plastic connecting pieces that clearly have 2 different sides. You can have the children physically move the pieces or put them in a separate container or some other method of showing that they are subtracted but I think it is good to be able to still see how many have been taken away as it helps with self-correction of errors.

The children choose one set of subtraction cards at a time to work on, beginning with the easier subtract 1 or 2 cards and then moving on to the more difficult combinations once they are able to do these without needing manipulatives. The aim is to have these basic maths facts committed to memory or so quickly worked out mentally that higher level mathematical skills based on them are not slowed down by having to work out the simpler steps. For your copy of my free printable subtraction cards click here: vertical-subtraction.)