Worked Example 1
Show 46 Two Ways
Show 46 using tens and ones in two different ways.
- 1One way: 4 tens + 6 ones, which is 40 + 6.
- 2Break one ten into 10 ones: 3 tens + 16 ones.
- 3Check: 30 + 16 = 46
Answer: 4 tens + 6 ones, or 3 tens + 16 ones
Florida Grade 1 Math · Number Sense and Operations
MA.1.NSO.1.3: Tens and Ones in Different Ways
What this Grade 1 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.1.NSO.1.3?
A two-digit number can be built from tens and ones in more than one way. For example, 37 is 3 tens + 7 ones, but it is also 2 tens + 17 ones, or 37 ones.
Children show these ways with objects (like bundles of 10 straws), drawings, and equations. Breaking a ten into 10 ones is the idea behind subtraction with regrouping later on.
Official benchmarkCompose and decompose two-digit numbers in multiple ways using tens and ones. Demonstrate each composition or decomposition with objects, drawings and expressions or equations.
How it is tested: Grade 1 students take FAST Star Math, Florida's math test for Kindergarten through Grade 2.
Worked Examples
Worked Example 2
Counting Tens
How many tens and ones are in 80?
- 180 is 8 groups of ten.
- 2There are no ones left over.
Answer: 8 tens + 0 ones
Common Mistakes to Watch For
Counting a ten as 1
Wrong:3 tens + 4 ones = 7
Each ten is worth 10: 3 tens is 30, so 3 tens + 4 ones = 34.
Thinking there is only one way to show a number
Wrong:52 can only be 5 tens and 2 ones.
Breaking a ten into ones gives 4 tens + 12 ones. It is still 52.
Helpful Math Tip
Make bundles of 10 with straws or craft sticks and rubber bands. Build a number, then "break" a bundle into 10 loose sticks and count again.
Related Grade 1 Skills
Make Florida Math Practice More Fun
Help your child build math confidence with original interactive questions aligned with Florida's B.E.S.T. Mathematics Standards.
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.