Mathematics · Grades 3–5
Arithmetic · Formula sheet
Rules, conditions and small examples in one printable reference.
Remember this
Two-digit addition
Regroup ten ones as one ten when needed.
ones + ones; tens + tens
66 + 35 = 101
Two-digit subtraction
Exchange one ten for ten ones when needed.
difference + subtrahend = minuend
13 + 14 = 27
Times tables to twelve
Multiplication represents equal groups.
groups × group size = total
10 × 2 = 20
Division facts
Use the related multiplication fact; the divisor cannot be zero.
dividend ÷ divisor = quotient
8 × 7 = 56
Find the remainder
The remainder is at least zero and smaller than the positive divisor.
dividend = divisor × quotient + remainder
78 = 4 × 19 + 2
Balance two sides
Work out one side, then subtract the known part.
a + □ = b + c
13 + 41 − 22 = 32
Further reading and review references
These are reference links, not copied exercises, institutional endorsement or proof of independent review.
Learning preview · teacher review required. Grade bands are approximate, not official curriculum alignment.