Math DA 2nd Grade Review

How many tens are there in the tens place in the  number 342?

• 300

• 40

• 4

• 2

Which shows 689 in expanded form?

•        a.     68 + 9

•        b.     6 + 8 + 9

•         c.     60 + 8 + 9

•         d.     600 + 80 + 9

Create a model for the number 689.

Sam and Trevor collected shells at the beach. Sam collected three hundred forty-two shells and Trevor collected 324 shells. Sam thinks he collected MORE shells. Do you agree with Sam? Why or why not?

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4. What number is represented in the model? Show your mathematical thinking.   

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Which TWO comparison statement is true?

• 1. 290 = 209

• 1. 543 > 500 + 40 + 3

• 1. three hundred twenty seven < 372

• 1. 4 hundreds, 1 ten, 8 ones > 814

• 1. 200 + 30+8 = 220 +18

Sam has 50 ten rods. Sam says he has enough to make the number 400. Is Sam correct? 

Justify your answer.

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Which number represents 8 tens, 2 ones, 3 hundreds?

• 238

• 328

• 382

• 823

David said the smallest number he can make with the digits 5, 2, and 4 is 254. Is David correct? Justify your thinking.

Which shows 700?

•         a.   700 tens

•         b.   70 tens

•         c.   7 tens

•         d.   7 ones