Week 2 of 8
Week 2
4th Grade → 5th Grade · Multdigit mult 2x2 and Summarizing
Math
2-Digit × 2-Digit Multiplication
Multiplying two two-digit numbers — 34 × 27. Middle of fourth grade.
The mistake to watch for. Forgetting the placeholder zero on the second row, which shifts the whole partial product one column left.
How to help. Write the zero first, before multiplying the second row. Putting it in afterwards is when it gets skipped.
A worked example
Try 23 × 14. First multiply by the 4 ones: 23 × 4 = 92. Then by the 1 ten: 23 × 10 = 230. Add the two parts: 92 + 230 = 322.
All 2-digit × 2-digit multiplication sets, with answer keys →
Words for this week
- multiply
- To add the same number again and again, in a faster way.
- product
- The answer you get when you multiply.
- digit
- One of the ten number symbols 0 to 9. The number 47 has two digits.
- estimate
- To find an answer that is close, without doing the exact work.
- factor
- A number you multiply. In 4 × 6 = 24, the factors are 4 and 6.
Read this week
Blues
A short arts article from our Learn library, chosen for this reading level. Read it together, then ask your child to tell you one new thing they learned.