InkLoop/NYS Standards/NY-2.NBT.9NY-2.NBT.9
2nd GradeNumber and Operations in Base Ten50 target questions
Explain why addition and subtraction strategies work using place value and the properties of operations.
Sample Practice Questions (3)
1
Look at the place value chart below showing . Explain how you would regroup the ones to find the total sum.
| Number | Tens | Ones |
|---|---|---|
| 38 | 3 | 8 |
| 24 | 2 | 4 |
Open response · diagram · tableSee Answer + Explanation →
2
Look at the place value chart. If you add 2 more tens to the number shown, what is the new total?
A
B
C
D
Multiple choice · diagramSee Answer + Explanation →
3
Use the number line to find the difference between and by counting on.
A
B
C
D
Multiple choice · diagramSee Answer + Explanation →
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NY-2.OA.1Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to taking from putting together taking apart and comparing with unknowns in all positions.→NY-2.OA.2Fluently add and subtract within 20 using mental strategies. By end of Grade 2 know from memory all sums of two one-digit numbers.→NY-2.OA.3Determine whether a group of objects (up to 20) has an odd or even number of members by pairing objects or counting them by 2s.→NY-2.OA.4Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.→