Multi Digit Add Sub Fluent

Print: Ages 8–11 · 1–3 min · Core · Multi Digit Addition · Independent Practice · Numeric Total

Watch: Watch whether the learner includes all ten addends exactly once. A response of 189 is decisive evidence that one endpoint pair was found but the full sequence was not combined.

Misread: There is no story noun to misread; the likely action/answer misread is stopping after one endpoint pair or omitting an endpoint. A response of 189 shows the first error; 846 means 99 was omitted, while 855 means 90 was omitted.

Curriculum: This task uses a finite run of consecutive whole numbers and an equal-pair structure. The scored skill is entering the exact sum; the reveal models a complete-coverage strategy.