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Week 1 of 8

Week 1

4th Grade → 5th Grade · Multdigit mult 2x1 and Text structure

Math

2-Digit × 1-Digit Multiplication

Multiplying a two-digit number by a one-digit number — 47 × 6. Early fourth grade.

The mistake to watch for. Multiplying the ones, then adding the carry before multiplying the tens instead of after.

How to help. Say the order out loud each time: multiply, then add the carry. Doing it in the wrong order gives an answer that looks plausible.

A worked example

Try 34 × 6. Multiply the ones: 4 × 6 = 24 (write 4, carry 2). Multiply the tens: 3 × 6 = 18, plus the 2 carried makes 20. Put it together: 204.

All 2-digit × 1-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.
regroup
To trade 10 ones for 1 ten (or 1 ten for 10 ones) when you add or subtract.
estimate
To find an answer that is close, without doing the exact work.

Read this week

Cheetah

A short animals 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.