Rounding & Estimating

About this app

A ball carrying the number sits on a hill between two rounding stations and visibly rolls to the nearer side — the 5 sits exactly on the peak and tips towards the bigger number. The rounding place is selectable (tens/hundreds/thousands); the original stays put as a little flag, because rounding does not really change the number. In estimate mode you first calculate with rounded numbers in your head and only then check the exact result. The Estimation Master game awards points for fast, close estimates against the clock.

Subject: Elementary · Maths

More from Elementary · Maths

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• Multiplication arrays
• Times Table Trainer
• Shape Explorer
• Geoboard
• Even or Odd
• Hundred Chart
• Measuring Length

A VisuApp by heyprof: interactive, free in your browser, no sign-up. What is a VisuApp? · All apps