Choose an estimate and explain why it makes sense.
Practice records correct first choices. In Team, 2–4 teams take turns on one screen: one point for a correct first choice, no speed bonus, and the turn changes on Next question. Changing a first choice does not earn a point.
Questions selects whole numbers, three factors, money, measures or a mixture. Three factors always uses multiplication. Entry, Core and Stretch change number size and rounding accuracy. Measures may need unit conversion. ≈ means approximately equal, not an exact equality.
New game keeps your choices and starts fresh scores with an unseen question. Reset restores the original untimed Practice game and restarts the question history. When opened from Curriculum, Reset restores that lesson's starting setup. Changing a setting starts fresh scores. Share this setup shares only the choices, with a fresh unsolved question.