Mensuration and calculation common mistakes

Common mistakes

• Measures in geometry common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Use standard units of measure and related concepts including length, area, volume, capacity, mass, time and money..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Measures in geometry.

• Angles, maps, scale drawings and bearings common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Measure line segments and angles in geometric figures..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Angles, maps, scale drawings and bearings.

• Angles, maps, scale drawings and bearings common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Interpret maps, scale drawings and bearings, including compass bearings and three-figure bearings..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Angles, maps, scale drawings and bearings.

• Area and volume formulae common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Know and apply formulae for areas of triangles, parallelograms and trapezia..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Area and volume formulae.

• Area and volume formulae common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Know and apply formulae for volumes of cuboids and other right prisms, including cylinders..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Area and volume formulae.

• Circles and composite solids common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Know and use the formulae for circumference and area of a circle..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Circles and composite solids.

• Circles and composite solids common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Calculate perimeters of two-dimensional shapes, including circles, and areas of circles and composite shapes..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Circles and composite solids.

• Circles and composite solids common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Higher only] Calculate surface area and volume of spheres, pyramids, cones and composite solids, including frustums where required..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Circles and composite solids.

• Sectors and arcs common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Higher only] Calculate arc lengths, angles and areas of sectors of circles..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Sectors and arcs.

• Congruence and similarity calculations common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Apply congruence and similarity, including relationships between lengths in similar figures..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Congruence and similarity calculations.