Expressions, powers and algebraic models
Build a model, justify why it applies and check the result.
IKMC Grades 9-10 - Selected Topics
Explain and apply the order of operations, including how a fraction bar groups its numerator and denominator.
Multiply and divide powers with the same base using the exponent laws, and recognise when those laws do not apply.
Use the difference of squares $a^2-b^2=(a-b)(a+b)$ to shorten calculations.
Sum an arithmetic sequence by pairing terms, counting the terms correctly.