2.04 Applications of subtraction

Lesson

Practice

Interactive practice questions

Find the value of $30-18-7$30−18−7.

Easy

< 1min

A farmer has $88$88 sheep in a paddock and $46$46 cows in another paddock. $13$13 sheep are taken away to the wool shed, and while the farmer is away $3$3 sheep get out of the paddock through a hole in the fence.

How many sheep are in the paddock now?

Medium

1min

$Fiona$ has ordered $359$359 large bricks for the purpose of building a brick shed. She uses $225$225 bricks for the two side walls, $63$63 bricks for the back wall and $31$31 bricks for the front wall, leaving space for a door.

How many bricks will there be left over?

Medium

1min

It took $Caitlin$ $268$268 seconds to finish a race. $Iain$ finished the race $2$2 seconds quicker than $Caitlin$ , and $Victoria$ finished the race $4$4 seconds quicker than $Iain$ .

How many seconds did it take $Victoria$ to finish the race?

Medium

< 1min

Outcomes

AC9M6N07

solve problems that require finding a familiar fraction, decimal or percentage of a quantity, including percentage discounts, choosing efficient calculation strategies and using digital tools where appropriate

AC9M6N09

use mathematical modelling to solve practical problems, involving rational numbers and percentages, including in financial contexts; formulate the problems, choosing operations and efficient calculation strategies, and using digital tools where appropriate; interpret and communicate solutions in terms of the situation, justifying the choices made

AC9M6A01

recognise and use rules that generate visually growing patterns and number patterns involving rational numbers

2.04 Applications of subtraction

Interactive practice questions

Outcomes

AC9M6N07

AC9M6N09

AC9M6A01

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