Complete neutral source
A fictional Australian-dollar budget is $300. Two invented whole-dollar costs are $148 and $153. There are no other costs in this model. These are not current prices, personal finances or a purchase invitation.
Eligibility
After additive financial modelling, estimate limits and exact comparisons have been taught, e.g. Day 59. Whole-dollar interpretation is checked; if unfamiliar, teach equivalent card-count target separately.
Access and help
Read or sign the exact source and prompts neutrally, enlarge them, or scribe the learner’s chosen words. A figure, operation, regrouping, equation role or check supplied by an adult is mathematical help and is recorded as such. Show, draw, type, sign or use usual communication. One component can be enough; pause/pass/finish are choices. Four own spaces are genuinely empty. Models, criteria and next lessons stay on separate staff pages.
First later limit
First/later are opportunity labels, not fixed order, matches, calibrated difficulty or learning gain. If source/answer exposed, record that rather than claim unseen.
Prompts
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Write a model for the combined cost and its comparison with the budget.
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Give a nearest-ten estimate and state its purpose.
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Calculate exactly and decide whether it fits. State the money left or excess.
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Give an exact check and explain why the rough estimate alone was insufficient here.
Four own areas initially empty. Reading the native complete source on the same page retains typed words. Reloading, closing or leaving this page can lose them. Use paper if you need a record.
Write a model for the combined cost and its comparison with the budget.
[Empty response area]
Give a nearest-ten estimate and state its purpose.
[Empty response area]
Calculate exactly and decide whether it fits. State the money left or excess.
[Empty response area]
Give an exact check and explain why the rough estimate alone was insufficient here.
[Empty response area]