# Ice Ice Maybe

## Fast Estimation with Basic Number Calculations

Help penguins migrate across a perilous ocean patrolled by hungry killer whales. Use your estimation and approximation skills to position floating icebergs and bounce the penguins safely from glacier to glacier.

## Selection of related activities

Curriculum-aligned activities

• ### Estimation

Estimate the result of a calculation by using sensible rounding.

• ### Number partners up to 20

Recall all addition and subtraction facts for each number to 20. Use this to solve problems involving small or large numbers.

• ### Number pairs up to 100

Derive and recall all number pairs that total 100. Add or subtract mentally pairs of two-digit whole numbers (e.g. 47 + 58, 91 - 35).

• ### Relate addition to multiplication

Understand why the commutative, associative and distributive laws apply to addition and multiplication and how they can be used to do mental and written calculations more efficiently.

• ### Use percentages

Find percentages of numbers and quantities (e.g. 10%, 5% and 15% of 80p)

• ### Find a fraction of an amount - simple examples

Find a fraction of a number using division and multiplication. e.g. Find 3/8 of 32.

## 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

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