• complete number sentences involving addition and subtraction by calculating missing numbers, eg find the missing numbers: o + 55 = 83,  o - 15 = 19

 

    * use inverse operations to complete number sentences (Problem Solving)

 

Find Missing Numbers – scroll down for activity

 

Find Number Sentence Combinations

 

    * justify solutions when completing number sentences (Communicating, Reasoning)

 

• find the missing number in a number sentence involving operations of addition or subtraction on both sides of the equals sign, eg   8 + o = 6 + 7

 

 Pan Balance

- can input the operations to create number sentences

 

Investigate and use the properties of even and odd numbers (ACMNA071)

 

• investigate and generalise the result of adding, subtracting and multiplying pairs of even numbers, pairs of odd numbers, or one even and one odd number, eg even + odd = odd, odd × odd = odd

 

    * explain why the result of a calculation is even or odd with reference to the properties of the numbers used in the calculation (Communicating, Reasoning)

 

    * predict whether the answer to a calculation will be even or odd by using the properties of the numbers in the calculation (Reasoning)

 

Demonstration of concepts – assists investigations

 

Demonstrate concepts (Smart Notebook file download)

 

Investigate number sequences involving multiples of 3, 4, 6, 7, 8 and 9 (ACMNA074)

 

• generate number patterns using multiples of 3, 4, 6, 7, 8 and 9, eg 3, 6, 9, 12, ...

 

    * investigate visual number patterns on a number chart (Problem Solving)

  

Interactive Hundreds Chart

 

Explore and describe number patterns resulting from performing multiplication (ACMNA081)

 

• use the word 'term' when referring to numbers in a number pattern

describe the position of each term in a given number pattern, eg 'The first term is 6' (Communicating)

 

Growth Patterns

 

• find a higher term in a number pattern resulting from performing multiplication, given the first few terms, eg determine the next term in the pattern 4, 8, 16, 32, 64, …

 

    * describe how the next term in a number pattern is calculated, eg 'Each term in the pattern is double the previous term' (Communicating)

Growth Patterns

Multiplication Fact Game

 

Interactive 100s Chart for Multiplication

– Multiples Question

 

Solve word problems by using number sentences involving multiplication or division where there is no remainder (ACMNA082)

 

• complete number sentences involving multiplication and division by calculating missing numbers, eg find the missing numbers: 28 = o x 7,  40 / o = 5

 

Thinking Blocks x and / Word Problems

 Grand Slam Maths Word Problems

 Word Problems with Katie

 Thinking Blocks - Division - Remainders

 

 

• represent and solve multiplication and division word problems using number sentences, eg 'I buy six pens and the total cost is $24. What is the cost of each pen?' can be represented as 6 x o = 24 or 24 / 6 = o

 

• discuss whether it is more appropriate to represent the problem using or in order to calculate the solution (Communicating, Reasoning)

 

Thinking Blocks x and / Word Problems

Grand Slam Maths Word Problems

Word Problems with Katie

Thinking Blocks - Division - Remainders

 

• pose a word problem based on a given number sentence, eg given , a problem could be: 'I have 28 cans of drink and stack them into rows of 4. How many rows will there be?' (Communicating, Problem Solving, Reasoning)