Adding doubles minus 1
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Free printable Adding doubles minus 1 worksheets for 1st grade. Students solve near-double problems by using a known double and subtracting one, providing an alternative approach to consecutive-addend facts. Builds strategic flexibility by offering multiple ways to reach the same answer. Part of our addition worksheets collection.
What You'll Learn
- Apply a known double to solve a doubles-minus-1 problem
- Recognize that doubles-minus-1 is one less than a doubles fact
- Practice near-doubles subtraction using known doubles facts
FAQ
When would a student choose doubles-minus-1 over doubles-plus-1 for the same problem?⌄
Some students find it easier to start from the larger double and subtract (7+7-1=13 for 6+7) while others prefer adding to the smaller double — both are valid.
How does learning both doubles-plus-1 and doubles-minus-1 build mathematical flexibility?⌄
Having two strategies for the same class of facts builds the 'I can check my answer using a different method' habit that supports mathematical confidence.
Which near-double facts does the doubles-minus-1 strategy apply to?⌄
It applies to consecutive-addend facts — 2+3, 3+4, 4+5, 5+6, 6+7, 7+8, 8+9 — the same set as doubles-plus-1, just approached from the other direction.
Ratings & Reviews
3David L.
2nd Grade Teacher · Verified download
Looking forward to this! All the other ClassWeekly worksheets are excellent so I know this will be too.
Helpful · 8
Jamie T.
1st Grade Teacher · Verified download
Thanks for creating this! I'll be using it the moment it's available.
Helpful · 4
Emily W.
Homeschool parent · Verified download
Excited for this one! I've been hunting for a good printable on this topic for weeks.
Helpful · 9
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