Step into an infinite world of stories
Children
Optiman, Multi-Girl, and Mr. Calculus are Prime City's greatest superheroes. They're also mathematical marvels! Join them in this action-packed adventure story, which will put your number skills to the test.
In their quest for justice, our heroes will have to overcome Doc Zero's diabolical challenges. Help them on their quest by following cryptic clues, interpreting mathematical maps, cracking number codes, and much more!
This awesome book will make you a maths superhero!
© 2020 Arcturus (Ebook): 9781398800601
Release date
Ebook: 27 August 2020
Over 950 000 titles
Kids Mode (child safe environment)
Download books for offline access
Cancel anytime
For those who want to listen and read without limits.
1 account
Unlimited Access
Unlimited listening
Cancel anytime
For those who want to listen and read without limits.
1 account
Unlimited Access
Unlimited listening
Cancel anytime
For those who want to listen and read without limits.
1 account
Unlimited Access
Unlimited listening
Cancel anytime
For those who want to share stories with family and friends.
2-3 accounts
Unlimited Access
Unlimited listening
Cancel anytime
2 accounts
S$14.90 /monthEnglish
Singapore