Numbers from Thousandths to Billions

Grade 6 extends the number line in both directions: to billions on the large end (world population: 8.2 billion) and to thousandths on the small end (measurements in medicine and science). The same place value principles apply throughout: each position is 10 times its neighbour to the right. Numbers from medicine (0.025 mg dosage), science (3.84 x 10^8 km to the Moon), technology (2.4 GHz), and media (4.3 million viewers) give this extended number range immediate relevance.