STANDARD ALGORITHMS

1
STANDARD ALGORITHMS For 10-13 Year
Olds Readiness Students need to have sufficient
conceptual development of place value prior to
using formal algorithm structures. Algorithms An
algorithm is a set of rules for solving a math
computation which, if done properly, will always
give a correct answer. While an algorithm is an
important aspect of mathematical knowledge and
skill, students need to recognize that they can
choose from mental computation, a written
algorithm or a mathematical tool such as a
calculator or abacus in solving a problem. There
are many algorithms for each of the four
processes and students, through exposure to
different models, will eventually adopt models
that best suit them. However, it is appropriate
for the most efficient algorithm (i.e. standard
algorithm) for each of the 4 processes to be a
key element of any school mathematics policy.
This presentation provides the structure and
language for developing each set of rules for the
standard algorithms for 7-10 year olds. A
separate PowerPoint presentation is available for
the standard algorithms used by 7-10 year olds.
Another PowerPoint presentation is also available
for standard fraction computations in addition,
subtraction, multiplication and division (for
10-13 year olds).
2

• STANDARD ALGORITHMS Years 4-7
• Add Whole Numbers With Regrouping Slides 3-5
• Add Decimal Numbers With Regrouping Slides 6-8
• Subtract Whole Numbers With Regrouping Slides
  9-12
• Subtract Decimal Numbers With Regrouping Slides
  13-14
• Multiply Whole Numbers With Regrouping Slides
  15-18
• Multiply Decimal Numbers With Regrouping Slides
  19-22
• Divide Whole Numbers With Regrouping Slides 23-28
• Divide Decimal Numbers With Regrouping Slides
  29-32

3
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