Students write fact families, solve two-digit sums and differences with and without regrouping, choose the operation for stories and find missing numbers.
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Students add and subtract two-digit numbers within 100 across two pages. They write four facts for each of three fact-family triangles, then solve eight vertical problems where 72 − 45 and three others need regrouping. In four short stories, from cans for a food drive to seats on a ferry, they decide whether to add or subtract and check with the opposite operation. A missing-number row moves the blank around, as in ___ − 26 = 58, and the answer key accepts the facts in any order.
Part B puts plus and minus problems side by side, with 86 − 52 straight after two additions. Have students circle the sign before they solve each one.
For the missing numbers, use the key's question: is the missing number a part or the whole? In ___ − 26 = 58 the missing number is the whole, so students add 26 and 58.
Ways to adjust the fact families, problems and stories for different students.
Each one is checked against the official documents. Where the resource covers only part of a standard, the note says so.
Students add and subtract two-digit numbers, write fact families that show how addition and subtraction undo each other, and find missing numbers. It is practice, not a timed fluency check.
Students read four stories, decide whether to add or subtract, write a number sentence, and check it with the opposite operation. All stories are one step, so two-step problems and compare stories are not covered.
Students add and subtract two-digit numbers, write fact families, and find missing numbers; adding three or four numbers at once is not practiced.
Students choose add or subtract for four one-step stories, solve them and check with the opposite operation; multi-step problems and numbers above 100 are not included.
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