Find the quick-calculation partners, then compute the final answer
12 levels. Choose the most useful regrouping, then enter the final answer. Start at 100 points; each valid wrong attempt costs 5 points and retries the same question after full visual correction.
๐ Commutative law: move useful numbers together.
๐ Associative law: regroup only, so easy partners are calculated first.
โโ Keep each sign attached to its number while rearranging.
๐ฏ Mission: Which regrouping best simplifies the calculation? Then enter the final answer.
Best partners: ?
Final answer: ?
โ Choose the most useful regrouping