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Keep one whole FAQs

Answers about Keep one whole speed sheets, including when to use the shortcut and what to practice next.

What is a Keep one whole mental math speed sheet?
It is a timed grid of 50 addition problems in 5 minutes, all built for the Keep one whole shortcut. Example pattern: 34 + 28 → 34 + 20 + 8 = 62.
Should I try the Keep one whole speed sheet first?
Learn the trick first at https://www.besparq.com/learn/mental-math/keep-one-whole/learn, then warm up with flashcards at https://www.besparq.com/learn/mental-math/keep-one-whole/flashcards. The speed sheet is for fluency after the strategy makes sense.
How is a 50-in-5 sheet different from a worksheet?
You type answers in a grid against a 5-minute timer and see a score when you submit. Missed Keep one whole items stay visible so you can retry the same shortcut.
Can I retry the Keep one whole speed sheet?
Yes. Start another 50-problem sheet anytime. Use a slower flashcard pass if the timer still feels rushed.
Where are the other mental math strategies?
All 15 strategies plus multiplication facts live on the Mental Math hub at https://www.besparq.com/learn/mental-math.