Drag rhythmic values into up to 8 beat blocks per line to build a drum groove, or click a tile then click a block to place it — handy on a trackpad.

🎵 Grade 2 Lesson 14: Adding Four Two-Digit Numbers — Add Up To Four Two-Digit Numbers (2.NBT.B.6) mess around all you want, nothing here saves
92 BPM
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Grade 2, Lesson 14: Adding Four Two-Digit Numbers

Math skill: Add Up To Four Two-Digit Numbers (2.NBT.B.6)

How the beat teaches it: Every slot adds four two-digit numbers at once — add them one pair at a time, and the total crosses 100, so build it split into hundreds, tens, and ones.

This is lesson 14 of 23 in RockBlocks Math, Grade 2, a free course where every lesson turns a math idea into something you can count, hear, and play. The previous lesson, Subtracting Two-Digit Numbers, With Regrouping,” covered subtract Within 100 With Regrouping (2.NBT.B.5). Next is Lesson 15, Adding Within 1000.”

Every slot above (A, B, C, D) is its own question, and it’s a real, blank RockBlocks beat the whole time — the same drag-and-drop tiles, kit, tempo, sheet music, and drummer view as anywhere else on the site. Tap ❓ Questionin the corner to read the current slot’s problem, build your answer right in the grid, then tap ✓ Check Answerto grade it. Once you’re done, keep going: expand the beat, drop it into a Stack, or save a copy to your own page — nothing here overwrites the lesson itself, so every visitor still starts from the same blank slots.