PencilGoGrade 2 · Math · Place value operations
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Grade 2 Math Worksheet - Challenge Me
Add or subtract.
117 - 10 =
297 + 100 =
539 + 10 =
711 - 10 =
629 - 10 =
702 + 100 =
558 + 10 =
171 + 100 =
190 - 10 =
839 + 100 =
783 + 100 =
389 + 10 =
550 + 100 =
702 + 10 =
109 + 100 =
859 + 100 =
711 + 10 =
259 - 10 =
693 + 100 =
380 + 10 =
Adding or subtracting ten or one hundred is a mental skill that grows straight out of place value. Ten more than 461 is 471, because only the tens digit changes. One hundred less than 856 is 756, because only the hundreds digit changes. Second graders should be able to do these in their heads, without regrouping, and to explain why: the other digits stay the same.
This worksheet gives twenty equations, each with a line for the answer, mixing ten more, ten less, one hundred more and one hundred less. Watch the numbers that cross a hundred, such as 698 + 10 and 704 - 10, where the hundreds digit changes too. Ask your child which digit changes and by how much before writing the answer.
Common Core standard: 2.NBT.B.8
461 + 10 = 471, because only the tens digit goes up by one. 856 - 100 = 756, because only the hundreds digit goes down by one.
Changing the wrong digit, such as adding one to the ones digit when adding ten.
Find the place that changes: tens for 10, hundreds for 100.
Changing the wrong digit, such as adding one to the ones digit when adding ten.
Find the place that changes: tens for 10, hundreds for 100.
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Similar: Add Up to Four Two-Digit Numbers · Add and Subtract Whole Hundreds
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