Virginia SOL 4.CE.2.g.i
The Standard
a two-digit factor and a one-digit factor;*
Virginia Standards of Learning for Mathematics · The student will estimate, represent, solve, and justify solutions to single-step and multistep problems, including those in context, using multiplication with whole numbers, and single-step problems, including those in context, using division with whole numbers; and recall with automaticity the multiplication facts through 12 × 12 and the corresponding division facts.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students estimate a product by rounding or using place value. They calculate the exact answer with partial products, properties, or the standard algorithm, then explain why the result is reasonable.
What Mastery Looks Like
- A student can estimate 47 × 6 as about 300, then correctly find 282. The student can show the calculation with partial products or the standard algorithm and use the estimate to check reasonableness.
Common Misconceptions
- Students may multiply each digit separately and write 18 and 24 side by side for 34 × 6. They may regroup 24 ones but forget to add the 2 tens to 18 tens. They may treat an estimate as the exact answer.
How to Assess It
- Exit ticket: Estimate and solve 47 × 6, then show one step that proves your exact answer is reasonable.
Lesson moves
Ways to Teach It
Build 23 × 4 with base-ten blocks, record four groups, then connect the model to partial products and the standard algorithm.
Ask, "Why is 29 × 6 close to 30 × 6, and how does that estimate help check the exact answer?"
Play Product Match: students pair multiplication cards with estimate cards and exact product cards, then explain one match to a partner.
Plan the cost of 7 class sets priced at $46 each, estimate the total, then calculate the exact cost.
Free download
Printable 4.CE.2.g.i Worksheet
A ready-to-print activity worksheet aligned to 4.CE.2.g.i, with an answer key for the teacher on its own page. No account needed.
PDF, US Letter, prints cleanly in black and white.
Download the worksheetKeep exploring
Related Standards
- 4.CE.2.g.ii
a three-digit factor and a one-digit factor;* or
- 5.CE.3.b.ii
a three-digit factor and a one-digit factor (e.g., 0.156 × 4, 3.28 × 7, 8.09 × 0.2);* and
- 4.CE.2.g.iii
a two-digit factor and a two-digit factor.*
- 5.CE.3.b.i
a two-digit factor and a one-digit factor (e.g., 2.3 × 4; 0.08 × 0.9; .16 × 5);*
Turn this exact standard into a lesson
Grade, subject, topic, and the complete standard are prefilled. Create one free, no account needed.