5.NBT.5: Multiplying Multi-Digit Numbers

I can fluently multiply multi-digit whole numbers using the standard algorithm.

Problem 1

Solve: 23 × 4 = ? 💡 Hint: Break it down: (20 × 4) + (3 × 4) = 80 + 12 = 92
Answer:

Problem 2

Calculate: 45 × 3 = ? 💡 Hint: Multiply 5 × 3 = 15, write 5 and carry 1. Then 4 × 3 = 12, plus 1 = 13.
Answer:

Problem 3

Find: 67 × 2 = ? 💡 Hint: Start with the ones place: 7 × 2 = 14. Write 4, carry 1.
Answer:

Problem 4

Solve: 34 × 5 = ? 💡 Hint: 4 × 5 = 20, write 0 and carry 2. Then 3 × 5 = 15, plus 2 = 17.
Answer:

Problem 5

Calculate: 56 × 4 = ? 💡 Hint: Work from right to left, remembering to carry when needed.
Answer:

Problem 6

Find: 78 × 3 = ? 💡 Hint: 8 × 3 = 24, write 4 and carry 2.
Answer:

Problem 7

Solve: 29 × 6 = ? 💡 Hint: Start with 9 × 6 = 54, write 4 and carry 5.
Answer:

Problem 8

Calculate: 43 × 7 = ? 💡 Hint: Break it into steps: ones place first, then tens place.
Answer:

Problem 9

Find: 85 × 2 = ? 💡 Hint: 5 × 2 = 10, write 0 and carry 1.
Answer:

Problem 10

Solve: 37 × 8 = ? 💡 Hint: Use the standard algorithm, working from right to left.
Answer: