── Core math

Math Practice Core

Interactive guides for high-intent arithmetic topics: regrouping, long division, multiplication tables, fractions, and word problems.

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Foundations

18 stickers - 7 given away + 6 new stickers = 17 stickers.

63 - 28 = 35: trade one ten so 13 - 8 works.

156 ÷ 12 = 13: 12 fits into 15 once, then 36 three times.

48 + 37 = 85: 8 + 7 = 15, carry 1.

7 x 8 = 56 and 8 x 7 = 56.

Most practiced

Mix 2s, 5s, and 10s with three target facts.

Answer 6 x 8, then immediately answer 8 x 6.

6 x 7 can be built from 6 x 5 + 6 x 2.

Go deeper

1/4 = 0.25 because 1 ÷ 4 = 0.25.

23 x 14 = 20 x 10 + 20 x 4 + 3 x 10 + 3 x 4.

7 x 18 = 7 x 20 - 7 x 2.