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Common Core Math Resources, Lesson Plans & Worksheets for all grades
Common Core Math Lessons, Math Worksheets and Games for Grade 2
Common Core Math Lessons, Math Worksheets and Games for all grades
Examples and solutions to help Grade 2 students learn how to use mental strategies to relate compositions of 10 tens as 1 hundred to 10 ones as 1 ten.
Common Core Standards: 2.NBT.6, 2.NBT.7, 2.NBT.8, 2.NBT.9
Lesson 17 Problem Set
Lesson 17 Homework
2. Solve mentally.
a. 2 ones + 8 ones = ________
2 + 8 = _________
2 tens + 8 tens = ________
20 + 80 = ________
b. 5 ones + 6 ones = ________
5 + 6 = _________
5 tens + 6 tens = ________
50 + 60 = ________
c. 14 ones + 4 ones = ________
14 + 4 = _________
14 tens + 4 tens = ________
140 + 40 = ________
3. Solve.
a. 6 ones + 5 ones = __ ten __ one
6 + 5 = _________
6 tens + 5 tens = __ hundred __ ten
60 + 50 = ________
b. 5 ones + 7 ones = __ ten __ ones
5 + 7 = _________
5 tens + 7 tens = __ hundred __ tens
50 + 70 = ________
c. 9 ones + 8 ones = __ ten __ ones
9 + 8 = _________
9 tens + 8 tens = __ hundred __ tens
90 + 80 = ________
4. Fill in the blanks. Rewrite each as an addition sentence with two parts.
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