
Addition
Missing-addend addition
Find an unknown first or second addend in horizontal equations with selectable blank symbols.
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Find the amount needed to reach 10, 100, or 1,000, including optional decimal variants for place-value reasoning.
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Start with the given number and count on to the target multiple of ten. Write the amount added and check the completed equation.
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Customize this worksheetLearning objective
Determine the missing part between a number and a selected power-of-ten target.
Worked example
33
Add 3 to reach 70, then 30 more to reach 100; 3 + 30 = 33.
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Addition
Find an unknown first or second addend in horizontal equations with selectable blank symbols.
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Addition
Solve linked groups of one-digit and two-digit equations to see how place value transforms a known addition fact.
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