Khan Academy

Multiplying decimals (no standard algorithm) (K-A)

Multiplying decimals: place value (K-A)

Multiplying challenging decimals (K-A)

Rewriting decimals as fractions: 0.15 (K-A)

Rewriting decimals as fractions: 0.36 (K-A)

Rewriting decimals as fractions: 0.8 (K-A)

Rewriting tricky fractions to decimals (K-A)

Writing a number as a fraction and decimal (K-A)

Addition and subtraction with significant figures (K-A)

Intro to significant figures (K-A)

Multiplying and dividing with significant figures (K-A)

Rules of significant figures (K-A)

Subtracting decimals-link (K-A)

Subtracting decimals: 10.1-3.93 (K-A)

Subtracting decimals: 9.57-8.09 (K-A)

Subtracting decimals: 39.1 – 0.794 (K-A)

Subtracting decimals: 9.005 – 3.6 (K-A)

Adding 8 + 7 (K-A)

Subtracting 14 – 6 (K-A)

Adding 2-digit numbers without regrouping 2 (K-A)

Adding with regrouping (K-A)

Basic addition (K-A)

Basic subtraction (K-A)

Adding 3-digit numbers (K-A)

Adding multi-digit numbers: 48,029+233,930 (K-A)