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The Kumon Math Boosters series is designed to help children who either need to improve their basic math skills, or who are slightly ahead of the curve. Math Boosters: Problem Solving with Ratios & Proportions focuses on challenging topics your child must master to be ready for algebra and other advanced math concepts.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.