Worked Example 1
Standard Algorithm
46 × 37
- 1Multiply by the 7 ones: 46 × 7 = 322
- 2Multiply by the 3 tens: 46 × 30 = 1,380
- 3Add: 322 + 1,380 = 1,702
Answer: 1,702
Florida Grade 4 Math · Number Sense and Operations
MA.4.NSO.2.3: Multiplying 2-Digit Numbers
What this Grade 4 benchmark means, worked examples, common mistakes, and a free printable worksheet.
Created by a Florida mom · Published by Tropical Learning LLC
What Is Benchmark MA.4.NSO.2.3?
Students multiply two whole numbers, each up to two digits, with procedural fluency, including the standard algorithm.
In the standard algorithm, multiply by the ones digit first, then by the tens digit (remembering it is tens, so the row ends in 0), and add the two rows.
Official benchmarkMultiply two whole numbers, each up to two digits, including using a standard algorithm with procedural fluency.
On the FAST test: part of the Grade 4 reporting category Number Sense and Operations with Whole Numbers, which is about 31–37% of the test.
Worked Examples
Worked Example 2
Another Example
85 × 64
- 185 × 4 = 340
- 285 × 60 = 5,100
- 3340 + 5,100 = 5,440
Answer: 5,440
Common Mistakes to Watch For
Forgetting the zero in the tens row
Wrong:46 × 37: 322 + 138 = 460
The 3 means 3 tens, so the second row is 46 × 30 = 1,380. The product is 1,702.
Forgetting a regrouped digit
Wrong:46 × 7 = 282
6 × 7 = 42: write 2, regroup 4. 4 × 7 = 28, plus 4 is 32. So 46 × 7 = 322.
Helpful Math Tip
Check the answer by estimating: 46 × 37 is close to 50 × 40, which is 2,000, so 1,702 makes sense.
Related Grade 4 Skills
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Start Practicing FreeIndependent Educational Platform. FastChomp is published by Tropical Learning LLC and is not affiliated with, sponsored by, or endorsed by the Florida Department of Education. FAST and Star assessment names are referenced for informational purposes only. FastChomp practice questions are original educational materials, not official Florida FAST assessment questions.