# Robo Ops

## Order of Operations

Rescue the Roborators from the control of Professor BIDMAS by decrypting the Roborator's security key using your knowledge of BIDMAS.

## Selection of related activities

Curriculum-aligned activities

• ### Order of operations using brackets

Understand the use of brackets to determine the order of operations.

• ### Add and subtract large numbers mentally

Extend mental-methods for whole-number calculations, for example to subtract one near-multiple of 1000 from another (e.g. 6070 - 4097).

• ### Quick methods for multiplication

Use short cut strategies to multiply e.g. 19 times a number is 20 times the number subtract the number.

• ### Quick methods for division

Use short cut strategies to divide e.g. division by 5 is division by 10 followed by doubling.

• ### Mental multiplication and division

Extend mental-methods for whole-number calculations with multiplication and division. For example to multiply a two-digit by a one-digit number, 12 × 9, work out 12 × 10 then subtract 12.

• ### Positive powers

Understand the pattern of results found from the positive integer powers. i.e. the continuing division of successive results as the power reduces by 1 and continued multiplication as the power increases by 1. Spot patterns in the sequence, e.g. in the units digit. Know the terms square (squared) and cube (cubed). Understand what is meant by a number to any positive integer power.

## What teachers say about Mangahigh

We’re loved by both teachers and students globally. Here’s the proof!

• Mangahigh turns our students into “maths addicts“ who compete with each other for top scores and gold medals. And since the quizzes reward both accurate recall of knowledge and deep conceptual understanding, every hour they spent having fun makes them better mathematicians. Five stars.

###### Tom Ding

Ark Academy, Wembley, London

• I have used Mangahigh in my classroom for over 5 years. What keeps me coming back are the math games and wide range of concepts that are offered. But the best part is the fact that the kids LOVE to play it. I have students beg me to assign them Teacher Challenges! Begging for more math work? I am ok with that!!

###### Renee Hernandez

Green Elementary School, Allen, Texas

• Kids loved it; an ADHD student who has NEVER before been able to focus in the last periods of the day; he wouldn't stop till he got a medal! Absolutely phenomenal! His mother is overjoyed, and the rest of the maths staff room were gobsmacked!

###### Joseph Peacock

Emanuel School, NSW