Master decimal place value, then practice comparing and ordering decimals — the foundation for every decimal skill still to come.
Meet the decimal point and place value chart, then practice telling which decimal is greater and putting a set of decimals in order.
Start learning → ≈ 4.4Roll a ball down the Rounding Hill, learn the three-step rule, then race the clock rounding to the nearest whole number, tenth, and hundredth.
Start rounding → + −Line up the decimal points, pad with zeros when needed, then add and subtract column by column — with carrying, borrowing, and plenty of practice.
Start learning → × .Multiply as if the decimal points weren't there, then count decimal places to figure out exactly where the point belongs in your answer.
Start learning → ÷ .Divide by a whole number just like normal — then learn the trick for dividing by a decimal: move both decimal points before you divide.
Start learning → ⇌ .Turn decimals into fractions using place value, and fractions into decimals with an equivalent power-of-10 fraction or long division.
Start learning →