Step 6 Objective
Consolidate and extend mental methods of calculation, working with decimals, fractions and percentages, squares and square roots, cubes and cube roots: solve word problems mentally.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Probing questions
How do you decide whether you can do a calculation mentally? What do you look for?
How would you do this division mentally? e.g. 420 ÷ 15
is 0.125 as a decimal. What other decimal equivalents can you find from this?
What percentages of quantities can you easily work out in your head?
How would you go about estimating a square root, for example, of 30?