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Grade 2
Domain Number and Operations in Base Ten
Cluster Understand place value.
Standard Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:
Task One, Ten, and One Hundred More and Less

One, Ten, and One Hundred More and Less


Tags: video
Alignments to Content Standards: 2.NBT.A.1
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Task

  1. What number is 1 more than 99?
  2. What number is 1 less than 600?
  3. What number is 10 more than 90?
  4. What number is 10 less than 300?
  5. What number is 100 more than 570?
  6. What number is 100 less than 149?

IM Commentary

This task acts as a bridge between understanding place value and using strategies based on place value for addition and subtraction. Within the classroom context, this activity can be differentiated using numbers that are either simpler or more difficult to manipulate across tens and hundreds.

Solution

  1. 100
  2. 599
  3. 100
  4. 290
  5. 670
  6. 49

One, Ten, and One Hundred More and Less

  1. What number is 1 more than 99?
  2. What number is 1 less than 600?
  3. What number is 10 more than 90?
  4. What number is 10 less than 300?
  5. What number is 100 more than 570?
  6. What number is 100 less than 149?
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