Use addition and subtraction to solve problems involving bar charts, pictograms and tables

Maths

Add two 3-digit numbers using partitioning

Add two 3-digit numbers using adjusting strategies

Add 2 and 3-digit numbers by redistributing

Choose the most efficient strategy to add two 3-digit numbers

Subtract 2 or 3-digit numbers using partitioning and bridging a multiple of 10

Subtract a pair of 2-digit numbers by finding the difference

Subtract 3-digit multiples of 10 by finding the difference between them

Choose the most efficient strategy to subtract from a 3-digit number

Use addition and subtraction to solve problems in different contexts

In this unit pupils will add and subtract two 3-digit numbers using partitioning, adjusting, redistribution and bridging. In the future unit pupils will accurately and efficiently solve multi-step addition and subtraction problems. They will understand and explain how both addition and subtraction equations can be used to describe the same additive relationship.

In the prior unit pupils found pairs of number that composed 100 and positioned 3-digit numbers on a number line and estimated their position on unmarked number lines. They compared and ordered 3 digit numbers. In this unit pupils will add and subtract two 3-digit numbers using partitioning, adjusting, redistribution and bridging

In this unit pupils will add and subtract two 3-digit numbers using partitioning, adjusting, redistribution and bridging.

Informal and mental strategies for adding and subtracting two 3-digit numbers

Which type of graphical data is being described here: a graph that uses pictures to represent information?

What is the combined mass of the sun bear and panda bear? {{ }} kg

What is the difference in mass between the sun bear and panda bear? {{ }} kg

Jun and Alex play a computer game and score points. Their scores are shown in the pictogram below. A full emoji represents 100 points, a half emoji represents 50 points. Which are the correct scores?

Jun and Alex play a computer game and score points. Their scores are shown in the pictogram below. A full emoji represents 100 points, a half emoji represents 50 points. How much did Jun win by?

The table below shows the scores over two goes for Alex in a netball shooting game. What was the combined total of both goes?

What is the missing whole in this bar model?

What is the difference between the two values shown?

Which of the pairs of numbers have a difference of 30?

Which of these is the correct equation represented by this number line?

Look at the number line. Which number is missing from the equation? 780 − {{ }} = 60


Look at the number line. Which number is missing from the equation? {{ }} + 120 = 270


Use addition and subtraction to solve problems involving bar charts, pictograms and tables

Lesson outcome