Estimating to check decimals means practising the idea at the table with counters or paper models and one clear check. We will demo once, then your child tries.

Materials: Place-value grid (ones / tenths / hundredths); Pencil. 1. Say the goal of Estimating to check decimals in plain words once. 2. Adult shows 0.3 as three tenths on the grid. 3. Child builds three decimal amounts on the grid and reads them aloud. 4. Fresh check: one fresh tenths/hundredths reading. Record and stop. Done: three correct decimal readings. Proof: parent note of examples and results. Stop: End after the fresh check; keep optional challenge for another day.