# Glossary

Repeated addition is adding equal groups together, which is the same as the multiplication. If the exact number is repeated, then we can write repeated addition in the form of multiplication.

## Remainder

An amount left over after division (happens when the first number does not divide exactly by the other). Example: 19 cannot be divided exactly by 5.

## Share

Splitting into equal parts or groups.

## Groups Of

A way to assist in describing multiplication with meaningful language. For example, 3 x 4 may be said as 3 groups of 4.

## Multiply

Obtain from (a number) another that contains the first number a specified number of times.

## Interchangeable Names for Numbers

Sometimes, numbers may be said in different ways in order to facilitate student understanding of value. An example of how this may be used at Forest Street is: 20 / Twenty -> Two T (Two Tens) 30 / Thirty -> Three T (Three Tens) 50 / Fifty -> Five T (Five Tens)

## Decimals

It is important when pronouncing numbers that include a decimal that students are showing an understanding of the value of each digit following the decimal point. At Forest Street Primary, when teaching and learning about decimals, we follow the pattern set out below: Decimal Point 5 tenths (not “point 5”) 59 hundredths (not “point 59”) 591 thousandths (not “point 591”)

## Renaming

Renaming is writing a number in an equivalent form, usually in terms of its place-value parts. For example: 462 is 4 hundreds 6 tens and 2 ones, but it can be renamed as 46 tens and 2 ones, or 4 hundreds and 62 ones 4.35 = 4 ones, 3 tenths, 5 hundredths = 43 tenths, 5 hundredths = 435 hundredths

## Base 10

Base ten blocks, also known as multibase arithmetic blocks (MAB) or Dienes blocks (after their creator, mathematician and educationalist Zoltán Pál Dienes), are a mathematical manipulative used by students to learn basic mathematical concepts including addition, subtraction, number sense, place value and counting. At Forest Street, the language we use is “base 10” as it relates to the place value

## Zero

The numeral 0 that has the value of nothing, none, nil or nought.