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Worksheet
Curated OER

Add or Subtract

For Students 1st - 2nd
In this math worksheet, students solve thirty addition and subtraction problems. The problems contain one-digit and two-digit numbers.
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Worksheet
Curated OER

Changing an atom

For Students 5th - 10th
In this atoms worksheet, learners add or subtract an electron, neutron, or proton from the given atom and then fill in what kind of element it is. Students fill in 4 blanks.