Mixed operations
Multi digit addition and subtraction
Mix vertical addition and subtraction with two through six digits, including focused no-regrouping and borrowing-into-zero practice.
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Two digit addition and subtraction
Use a two-digit first operand and a one- or two-digit second operand in mixed vertical practice, with optional regrouping.
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Align the ones, read the sign and work across the columns. Check whether carrying or borrowing is allowed by the chosen setting.
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Choose the operations and the amount of support
Choose by the learner’s current skills. Mixing operations adds the task of recognizing a sign before choosing a method, even when the individual numbers are familiar.
The preview shows the first student page. Downloads contain the complete worksheet; the version with answers adds a separate key with matching problem positions. More spacious written-method practice may use several pages.
Learning objective
What this activity builds
Connect tens and ones with a reliable written calculation method.
Worked example
43 + 5 = ?
48
Five ones combine with three ones to make eight ones; the four tens stay the same.
Teaching notes
Make the practice count
- Begin with one-digit second operands and no regrouping after tens and ones are secure.
- Move to two-digit second operands before combining larger widths and regrouping.
- Use an inverse calculation to check subtraction.
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Decimal addition and subtraction
Add and subtract exact fixed-place decimals with one to three fractional digits and up to four digits left of the decimal.
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