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Arithmetic / Numeracy

Aids for basic arithmetic and other topics.

Amazon: Numeracy

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Number Foundations

Number Basics

Operations Associativity Commutativity Distributivity Identity Number bases Place value (hundreds, tens, units) Numeracy Workbooks 5 Minute 50

Arithmetic

Addition Subtraction Multiplication table Multiplying large numbers Grid method Gelosia multiplication ×10, ×100, ×1000 Short division Long division ÷10, ÷100, ÷1000

Order of Operations

BODMAS

Integers

Integers Adding negatives Subtracting negatives Multiplying integers Dividing integers

Rounding

Rounding decimals Significant figures Tolerance Kindle: Rounding & Significant Figures

Squares & Roots

Squares & square roots Rectangular numbers Triangular numbers

Standard Form

Standard form Tolerance Standard Form

Fractions, Decimals & Percentages

Ratio, Proportion & Rates

Ratio

Ratio Equivalent ratios Vedic equivalent ratios Sharing in proportion

Proportion

Proportion Direct proportion Indirect proportion Variation Rule of 3

Rates & Scales

Map scales Time differences Unitary method

Measurement & Units

Units & Conversions

SI Units Length conversions Mass conversions Volume conversions Unitary conversions

Time

Time units 12 & 24 hour clock 12 hour clock 24 hour clock 12 → 24 conversion 24 → 12 conversion Time differences Kindle: Clock Faces

Social Arithmetic