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Worksheet
Curated OER

Missing Number Addition

For Students 1st - 2nd
For this missing number worksheet, students fill in missing addends to complete 5 simple problems. An answer key is included on page 2.
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Worksheet
Curated OER

Addition-Missing Numbers

For Students 1st - 2nd
In this addition worksheet, students fill in the missing number necessary to arrive at a given sum. A reference web site is given for additional activities.
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Worksheet
Curated OER

Missing Numbers Addition [B]

For Students 2nd - 3rd
In this addition instructional activity, students write the missing addend in a box, 24 simple addition problems total. Answers are included on page 2.
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Worksheet
Curated OER

Missing Numbers Addition [C]

For Students 2nd - 3rd
In this addition worksheet, students fill in the missing addend in 24 simple addition problems, answers are included on page 2.
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Worksheet
EdHelper

Addition: Missing Numbers

For Students 1st - 3rd
For this addition instructional activity, students look at pictures of blocks and their numerical values, then find the missing addend. Worksheet is labeled "sample" and is part of a subscription site with links.
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Worksheet
EdHelper

Addition: Missing Number Fill In

For Students 1st - 2nd
For this addition worksheet, students fill in a missing addend to solve 23 problems. Worksheet is part of a subscription site with links and is labeled as a sample.
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Interactive
Curated OER

Missing Number Addition

For Students 1st - 3rd
In this addition worksheet, students are given one addend and the answer to a total of 25 simple addition problems. Students fill in the missing addend. Worksheet is labeled as a sample from a subscription site.