Fractions, decimal point and strip

100-cell strip: color, code as a decimal, place on the number line, sort.

A 100-cell strip stands for the unit 1. Color 30 of them and you've colored 30/100 = 3/10 = 0.3 — the same amount written three ways. Four short exercises help you switch between writings.

Color: fill in exactly the requested fraction.
Decode: the strip is colored, find the fraction and the decimal.
Place: drag the cursor onto the requested number.
Sort: put the numbers in increasing order.

Learning objectives

Grade 4
Discover decimal fractions in tenths using the 100-cell strip. Build the equivalence between a fraction n/10, its decimal notation and a position on the number line. Work only with values between 0 and 1.
Grade 5
Extend to hundredths (n/100) and to decimals greater than 1. Compare and order decimals in increasing order. Consolidate reading and writing decimals down to the hundredth.

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