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Add a single digit to a 3-digit number with base 10 blocks, not crossing the tens boundary.
Add a multiple of 10 to a 3-digit number with a bar model, crossing 100.
Add a multiple of 10 to a 3-digit number with a bar model, not crossing 100.
Add mentally a single digit to a 3-digit number.
Add a single number to a teen with answers up to 20 with no help.
Add a single number to a teen with answers above 20 with no help.
Add a single number to a teen with answers above 20, with the help of a number line.
Add a single number to a teen with answers up to 20, with the help of a number line.
Add a single digit to 10 with images to help.
Add a single digit to 10 with a bar model to help.
Add a single digit to 10 with a number line to help.
Add a single digit to 10 with no additional help.
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