Microsoft Excel required
Follow the pathway and keep an accurate cumulative tally of addition and subtraction - two digit numbers between 10 & 20 - see main image
20 different files and challenges
2 challenges on each page
A new random set of numbers every time the file is opened
Requires concentration and stamina
In addition to solving each question mentally, these challenges can also give the pupil calculator practice.
In addition to printing the challenges for individual work, they also prove a valuable resource by displaying them on your IWB for collaborative work
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£2.00