Subtraction questions that require a method that goes beyond memorization of number facts. This is generally done using a written algorithm.

• ### Subtraction of 2-Digit Numbers with Regrouping [PowerPoint TBM207]

49 slides. Visual presentation for subtracting 2-digit numbers using number lines, open (empty) number lines, hundred grid and base ten materials. Includes bridging ten and regrouping examples. Interactive PowerPoint Think Bubble Math 207

• ### Subtraction of 2-Digit Numbers with Regrouping WS

6 pp. Includes worksheets, number lines and hundred grid. Accompanies Interactive PowerPoint Think Bubble Math 207.

• ### Subtraction of 2 and 3-Digit Numbers with Regrouping [PowerPoint TBM307]

34 slides. Visual presentation of algorithms for subtracting from 2-, 3- and 4-digit numbers, including regrouping and zeros.

• ### Subtraction of 2 and 3-Digit Numbers with Regrouping WS

4 pp. Worksheets to practise subtraction from 2- and 3-digit numbers. Accompanies Interactive PowerPoint Think Bubble Math 307.

• ### Subtraction with Decimals

48 slides. Visual presentation of algorithms for subtracting 4-digit numbers and decimals. Includes regrouping and zeros.

• ### Subtraction with Decimals WS

4 pp. Worksheets to accompany Interactive PowerPoint Think Bubble Math 407.

• ### Subtraction Facts Vertical & Horizontal

Subtraction facts with vertical and horizontal layouts.

• ### Subtraction: 2-Digit Take 2-Digit No Regrouping

Subtraction algorithms: 2-digit take 2-digit with no regrouping. Includes vertical and horizontal layouts.

• ### Subtraction: 2-Digit Take 1-Digit With Regrouping; Vertical & Horizontal

Subtraction algorithms: 2-digit take 1-digit with regrouping. Includes vertical and horizontal layouts.

• ### Subtraction: 2-Digit Take 2-Digit Regrouping; Vertical & Horizontal

Subtraction algorithms: 2-digit take 2-digit with regrouping. Includes vertical and horizontal layouts.

• ### Subtraction: 3-Digit Take 2-Digit With Regrouping; No Zeros in Tens

Subtraction algorithms: 3-digit take 2-digit with regrouping. There are NO ZEROS in the tens place. Includes vertical and horizontal layouts.

• ### Subtraction: 3-Digit Take 2-Digit With Regrouping

Subtraction algorithms: 3-digit take 2-digit with regrouping. Includes vertical and horizontal layouts.

• ### Subtraction: 3-Digit Take 3-Digit With Regrouping

Subtraction algorithms: 3-digit take 3-digit with regrouping. Includes vertical and horizontal layouts.

• ### Subtraction: 4-Digit Take 4-Digit Regrouping

Subtraction algorithms: 4-digit take 4-digit with regrouping. Includes vertical and horizontal layouts.

• ### Subtraction: 5 or More Digits

Subtraction algorithms: 5 or more digits. Includes vertical and horizontal layouts.

• ### Subtraction: Tenths, 2 and 3 Digits

Subtraction questions of 2- or 3-digit numbers which include tenths. Algorithm is vertical; some questions are presented horizontally, requiring students to rewrite the question vertically to solve.

• ### Subtraction: Hundredths, 3 and 4 Digits

Subtraction questions of 3- or 4-digit numbers which include hundredths. Algorithm is vertical; some questions are presented horizontally, requiring students to rewrite the question vertically to solve.

• ### Subtraction: Thousandths, 4 and 5 Digits

Subtraction questions of 4- or 5-digit numbers which include thousandths. Algorithm is vertical; some questions are presented horizontally, requiring students to rewrite the question vertically to solve.

Order of operations with addition and subtraction number facts, without brackets or parentheses. Also includes all operations number fact revision.

Order of operations with addition and subtraction number facts with brackets or parentheses. Also includes all operations number fact revision.

• ### Teaching Strategies – Model Simple Problems

Notes on how to model problem solving and to write the number sentence.

• ### Teaching Strategies – Writing Number Sentences

Notes on how to model problem solving and to write the number sentence.

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### Scrolling Hundred Board Quick Start Guide

6pp. Features and funcitons of the Scrolling Hundred Board Gadget: A hundred board that scrolls from 0 to 2000. Scrolling arrows and options allow for counting, highlighting multiples and special numbers.

• ### Scrolling Hundred Board: Teaching Strategies Activities

20pp. Activites and ideas for using the Scrolling Hundreds Board. Matching lesson plans, templates and worksheets are available as other resources.

• ### Scrolling Hundred Board: Subtraction

9pp. Subtracting using the Scrolling Hundred Board. Includes activities ranging from simple 2 digit take 1 digit, through to 3 digit take 3 digit with regrouping.

• ### Easter Colouring In – The Cross (Four Operations)

Page revises all four operations in a fun colouring-in activity.

• ### Easter Colouring In – Egg Hider (Four Operations)

Page revises all four operations in a fun colouring-in activity.

• ### ANZAC Colouring In – Simpson & Donkey (Four Operations)

Page revises all four operations in a fun colouring-in activity.