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2nd grade · Math · Unit 1 of 19

Numbers to 1000

Hundreds, tens and ones

What your child practices

Reading and building numbers up to 1000 with hundreds, tens and ones, counting forwards and backwards by 10s and 100s, even and odd numbers, estimating with 100s as benchmarks, and comparing with <, > and =.

Texas Essential Knowledge and Skills (TEKS) teks student expectation: 2.2(A); 2.2(B); 2.2(D) · building numbers from hundreds, tens and ones, and comparing and ordering numbers to 1,200

How we explain it

Children can open this short lesson before they practice.

  1. A 3-digit number has hundreds, tens and ones.
  2. Count by 10s or 100s to move up quickly.
  3. Compare hundreds first, then tens, then ones.

Example: Count by 10s: 140, 150, 160, 170, ? Each step adds 10. 170 + 10 = 180. Answer: 180

Numbers to 1000 in Texas

In the Texas Essential Knowledge and Skills (TEKS), this is unit 1 of 19 in 2nd grade Math, before Bigger or Smaller.

Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.

Source: Texas Education Agency (TEA)

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Is 213 closer to 200 or 300?

    • 200
    • 300

  2. Question 2

    Count by 100s backwards: 700, 600, 500, 400, ?

    • 300
    • 304
    • 302

  3. Question 3

    What is 10 less than 801?

    • 791
    • 793
    • 788

  4. Question 4

    Which sign goes in the box?

    267 236

    • <
    • =
    • >

  5. Question 5

    Build the number 840.

    Build it with tens rods, hundreds flats and ones cubes.

  6. Question 6

    Is 227 closer to 200 or 300?

    • 200
    • 300

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