# Crystal Crash Games

These games are all linked to objectives from the new mathematics curriculum. All of these games are available as a single app for both iPad and Android.

Multiplication - Crystal Crash

A great game to get children to practise their times tables. The objectives for this game have been taken from the new mathematics curriculum.

This game, together with all the other crystal crash games, is available as a single iPad or Android app.

 1. Recall and use doubles of all numbers to 10 (Y1) 6. 3 times table (Y3) 11. 6 times table (Y4) 16. Double 3 digit numbers (Y4) 2. 2 times table (Y2) 7. 4 times table (Y3) 12. 7 times table (Y4) 17. Double decimals (1dp) (Y4) 3. 5 times table (Y2) 8. 8 times table (Y3) 13. 9 times table (Y4) 18. Recognise square numbers (up to 15²) (Y5) 4. 10 times table (Y2) 9. Double numbers up to 100 (Y3) 14. 11 times table (Y4) 19. Recognise cube numbers (up to 10³) (Y5) 5. Derive and use doubles of simple two-digit numbers (Y2) 10. Doubles of multiples of 50 up to 500 (Y3) 15. 12 times table (Y4) 20. Double decimals (2dp) (Y5)
Addition - Crystal Crash

A fun game to practise mental addition skills. The game was designed to cover all the mental addition objectives in the new math curriculum. You can choose one objective, or choose all the objectives for a year group.

This game, together with all the other crystal crash games, is available as a single iPad or Android app.

Subtraction - Crystal Crash

The game was designed to cover all the mental subtraction objectives in the new math curriculum. You can choose one objective, or choose all the objectives for a year group.

This game, together with all the other crystal crash games, is available as a single iPad or Android app.

 1) Subtract numbers from up to 10 (Y1) 6) Subtract from 100 (multiples of 10) (Y3) 11) Subtract tens from a three-digit number (Y3) 16) Subtract combinations of decimals (1dp) (Y4) 2) Subtract numbers from up to 20 (Y1) 7)Subtract from 100 (multiples of 5) (Y3) 12) Subtract hundreds from a three-digit number (Y3) 17) Subtract a decimal (2dp) from 1  (Y5 & Y6) 3) Subtract ones from a two-digit number (Y2) 8) Subtract from 100 (Y3 & Y4) 13) Subtract a decimal (1dp) from 1 (Y4 & Y5) 18) Subtract combinations of three-digit numbers (Y5 & Y6) 4) Subtract tens from a two-digit number (Y2) 9) Subtract from 1000 (multiples of 100) (Y3 & Y4) 14) Subtract a decimal (1dp) from 10 (Y4 & Y5) 19) Subtract combinations of decimals (2dp) (Y5 & Y6) 5) Subtract a two-digit number from a two-digit number (Y2) 10) Subtract ones from a three-digit number(Y3) 15) Subtract two-digit numbers from three-digit numbers (y4)
Crystal Crash - Fractions of Numbers

This game, together with all the other crystal crash games, is available as a single iPad or Android app.

Choose from the following levels:

 1) 1/2 of numbers up to 20 (whole answers) 5) unit fractions of up to 100 (whole answers) 9) harder multi-part fraction of up to 100 (e.g. 4/7 of 49) 2) 1/2 of numbers up to 40 (whole answers) 6) 1/10 of multiples of 10 (e.g. 1/10 of 60) 10) 1/10 of numbers up to 100 (inc. decimal answers) 3) 1/2 of numbers up to 100 (whole answers) 7) multiples of 1/10 of multiples of 10 (e.g. 3/10 of 80) 11) multiples of 1/10 of up to 100 (inc. decimal answers) 4) 1/4 of numbers up to 100 (whole answers) 8) simple multi-part fractions of up to 100 (e.g. 3/5 of 25) 12) unit fractions of up to 20 (inc. decimal answers)
Roman Numerals - Crystal Crash

Match the Roman numerals with the correct numbers.

This game, together with all the other crystal crash games, is available as a single iPad or Android app.

Division - Crystal Crash

A fun way to get children to practise their division facts. All the levels are based on objectives from the new maths curriculum. Choose one level, or select all the levels for a year group.

This game, together with all the other crystal crash games, is available as a single iPad or Android app.

 1. Half of numbers to 20 (Y1) 5. Derive and use halves of simple two-digit even numbers (Y2) 9. Halve numbers up to 200 (Y3) 13. Division facts for the 11 times table (Y4) 2. Division facts for the 2 times table (Y2) 6. Division facts for the 3 times table (Y3) 10. Division facts for the 6 times table (Y4) 14. Division facts for the 12 times table (Y4) 3. Division facts for the 5 times table (Y2) 7. Division facts for the 4 times table (Y3) 11. Division facts for the 7 times table (Y4) 15. Halve decimals (1dp) (Y4) 4. Division facts for the 10 times table (Y2) 8. Division facts for the 8 times table (Y3) 12. Division facts for the 9 times table (Y4) 16. Halve decimals (2dp) (Y5)
Reading Numbers - Crystal Crash

Match the numbers written in words with the correct numerals. The following expectations are taken from the new maths curriculum:

1. Read numbers to 20 in numerals and words (Y1)

2. Read numbers to 100 in numerals and words (Y2)

3. Read numbers to 1000 in numerals and words (Y3)

4. Read numbers to 10,000 in numerals and words (Y4)

5. Read numbers to 1,000,000 in numerals and words (Y5)

6. Read numbers to 10,000,000 in numerals and words (Y6)

This game, together with all the other crystal crash games, is available as a single iPad or Android app.

Simplify Fractions - Crystal Crash

Shoot the fraction in its simplest form.

This game, together with all the other crystal crash games, is available as a single iPad and Android app.

Rounding - Crystal Crash

Throw your pickaxe at the correct crystal. This game has the following levels (taken from the new maths curricululum):

1. Round numbers up to 100 to the nearest 10 (Y2)

2. Round numbers up to 1000 to the nearest 10 (Y3)

3. Round numbers up to 10,000 to the nearest 10, 100 or 1000 (Y4)

4. Round decimals with one decimal place to the nearest whole number (Y4)

5. Round decimals with two decimal places to the nearest whole number and to one decimal place (Y5)

6.Round decimals with up to three decimal places to the nearest whole, one decimal place or two decimal places (Y6)

This game, together with all the other crystal crash games,  is available as a single iPad or Android app.

Telling the Time in Words - Crystal Crash

Read the time in words and then match with the digital time.

This game, together with all the other crystal crash games, is available as a single iPad or Android app.

Convert Fractions to Percentages

Convert the fractions to percentages. Choose from unit fractions, multi-part fractions or improper fractions.

This game, together with all the other crystal crash games, is available as a single iPad or Android app.

Convert Fractions to Decimals

Convert the fractions to decimals and throw your axe at the correct crystal.

This game, together with all the other crystal crash games, is available as a single iPad or Android app.

Multiples, Factors, Prime, Square and Cube Numbers

Choose to shoot either; multiples of up to 20, factors of up to 40, prime numbers, square numbers or cube numbers.

This game, together with all the other crystal crash games, is available as a single iPad or Android app.