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Each game has 10 questions.

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Unlock harder levels by getting an average of 80% or higher.

Earn up to 5 stars for each level

The more questions you answer correctly, the more stars you'll unlock!

Each game has 10 questions.

Green box means correct.

Yellow box means incorrect.

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Secondary 1 - Number and Algebra

Standard 7.NA.1 - Solve addition and subtraction word problems with decimals.

Included Skills:

Numbers and their operations

• 1.1 primes and prime factorisation

• 1.2 finding highest common factor (HCF) and lowest common multiple (LCM), squares, cubes, square roots and cube roots by prime factorisation

• 1.3 negative numbers, integers, rational numbers, real numbers and their four operations

• 1.4 calculations with calculator

• 1.5 representation and ordering of numbers on the number line

• 1.6 use of <, >, ≥, ≤

• 1.7 approximation and estimation (including rounding off numbers to a required number of decimal places or significant figures, and estimating the results of computation)

• 1.8 Classify whole numbers based on their number of factors and explain why 0 and 1 are not primes.

• 1.9 Discuss examples of negative numbers in the real world.

• 1.10 Represent integers, rational numbers and real numbers on the number line as extension of whole numbers, fractions and decimals respectively.

• 1.11 Use algebra discs or the AlgeDisc application in AlgeTools to make sense of addition, subtraction and multiplication involving negative integers and develop proficiency in the 4 operations of integers.

• 1.12 Work in groups to estimate quantities (numbers and measures) in a variety of contexts, compare the estimates and share the estimation strategies.

• 1.13 Compare follow-through errors arising from intermediate values that are rounded to different degrees of accuracy.

• 1.14 Make estimates and check the reasonableness of answers obtained from calculators.

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