986 prompts matching "Checking answers using casting out nines"
Find my error: Proving that the exterior angle of a triangle
Act as my SS1 Maths tutor. I attempted a harder question on proving that the exterior angl
Find my error: Calculating the square and square root
Act as my SS1 Maths tutor. I attempted a harder question on calculating the square and squ
Find my error: Calculating compound interest
Act as my SS1 Maths tutor. I attempted a harder question on calculating compound interest
Find my error: Factorising an algebraic expression
Act as my SS1 Maths tutor. I attempted a harder question on factorising an algebraic expre
Find my error: Recognising the symmetry properties
Act as my SS1 Maths tutor. I attempted a harder question on recognising the symmetry prope
Find my error: Solving a fractional equation with a linear
Act as my SS1 Maths tutor. I attempted a harder question on solving a fractional equation
Find my error: Deciding which method is fastest
Act as my SS1 Maths tutor. I attempted a harder question on deciding which method is faste
IGCSE Practice: Ordering, Rounding and Estimation (a)(b)(c)
I am a Year 10 pupil. Set me a structured Cambridge IGCSE-style question on ordering, roun
Spot My Mistake: A multiplication table in modulo seven (IGCSE Marking)
I am in SS 1. I am revising for both my Cambridge IGCSE and my WAEC Mathematics papers. Sh
IGCSE-style question: Applying several index laws in one simplification
I am a Year 10 pupil. Set me one full Cambridge IGCSE examination question on applying sev
WAEC past-question style: An expression needing several index laws at once
Act as my WAEC Mathematics coach. I am in SS 1. Write me a question on an expression needi
IGCSE-style question: A fractional index written as a root
I am a Year 10 pupil. Set me one full Cambridge IGCSE examination question on a fractional
Spot My Mistake: An index that is both negative and fractional (IGCSE Marking)
I am in SS 1. I am revising for both my Cambridge IGCSE and my WAEC Mathematics papers. Sh
IGCSE-style question: A quadratic sequence and its second difference
I am a Year 10 pupil. Set me one full Cambridge IGCSE examination question on a quadratic
Spot My Mistake: A sequence built from the triangular numbers (IGCSE Marking)
I am in SS 1. I am revising for both my Cambridge IGCSE and my WAEC Mathematics papers. Sh
IGCSE-style question: Factorising a quadratic before solving it
I am a Year 10 pupil. Set me one full Cambridge IGCSE examination question on factorising
WAEC past-question style: A quadratic that must be rearranged before it will factorise
Act as my WAEC Mathematics coach. I am in SS 1. Write me a question on a quadratic that mu
Spot My Mistake: Factorising a quadratic whose leading coefficient is above one (IGCSE Marking)
I am in SS 1. I am revising for both my Cambridge IGCSE and my WAEC Mathematics papers. Sh
Spot My Mistake: Making the coefficients match before eliminating (IGCSE Marking)
I am in SS 1. I am revising for both my Cambridge IGCSE and my WAEC Mathematics papers. Sh
IGCSE-style question: A joint variation with one variable in the denominator
I am a Year 10 pupil. Set me one full Cambridge IGCSE examination question on a joint vari