01
Have a go first
The Question
Write these five numbers in order, smallest first: 3.09, 3.9, 3.099, 3.19, 3.0999
02
Then check together
The Answer
Reveal the Answer
3.09, 3.099, 3.0999, 3.19, 3.9
Line up the decimal points and compare column by column. The classic error is reading 3.0999 as the largest because it has the most digits — length is not size.
Now watch the solution
Pencil and paper
Practice Sheet — free this week
Week 1 is our free sample. Pop your email in and we'll send you all five worksheets and solutions — and the Friday email with that week's five questions.
Want a Plan Built Around Your Child, Not Just This Week’s Question?
Small groups of around 4–5 (max 8), matched to your child’s year group and pace. Start with the free baseline assessment and we’ll tell you exactly where they are.
