Multiplication Blueprint Support SheetMultiplication Blueprint The Traditional Stacked Method Guide Project No. 2x2-STACK Architect Name Date of Completion Visual Construction Guide 1 The Ones Floor Multiply the top number by the bottom ones digit. Remember to carry extras to the tens column! 2 Secure the Foundation Place a Magic Zero in the ones column of the second row. You are now working with tens! 3 The Tens Floor Multiply the top number by the bottom tens digit. Add your carries above any previous ones. 4 Final Assembly Add both partial products together. Keep your columns perfectly straight for the final sum. Annotated Blueprint: 34 × 26 1 2 H T O 34 × 26 (34×6) 204 (34×2) 680 884 Ones Place Tens Place Magic Zero Final Addition Practice Jobs Use the blueprint steps for success Job 1: 42 × 15 GUIDED GRID Ref Th H T O _ _ 4 2 × 1 5 (×5) (×10) 0 Job 2: 58 × 23 OPEN GRID Ref Th H T O 5 8 × 2 3 0 Architect Pro Tip Cross off your carries after you finish the first row so they don't get mixed up with Step 3's carries!
Blueprint Answer KeyBlueprint Master Key Solution Manual for 2x2 Construction Jobs Project No. 2x2-KEY Job 1 Result 42 × 15 Ref Th H T O 1 1 4 2 × 1 5 (×5) 2 1 0 (×10) 4 2 0 6 3 0 Validation Checklist: • Row 1: 42 × 5 = 210 (Carry 1 to tens) • Row 2: 42 × 10 = 420 (Magic Zero used) • Total: 210 + 420 = 630 Job 2 Result 58 × 23 Ref Th H T O 1 1 2 5 8 × 2 3 (×3) 1 7 4 (×20) 1 1 6 0 1 3 3 4 Validation Checklist: • Row 1: 58 × 3 = 174 (Carry 2 to tens) • Row 2: 58 × 20 = 1,160 (Carry 1 to hundreds) • Total: 174 + 1,160 = 1,334 Blueprint Inspection Authorized • Standards 4.NBT.B.5 Verified
