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STANDARDS

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US-MO

Math

Missouri Math

Grade 1: Number Sense and Operations in Base Ten

1.NBT.A

Understand place value of two-digit numbers.

1.NBT.A.1

Not covered
Understand that 10 can be thought of as a bundle of 10 ones – called a “ten”.
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1.NBT.A.2

Not covered
Understand two-digit numbers are composed of ten(s) and one(s).
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1.NBT.A.3

Fully covered
Compare two two-digit numbers using the symbols >, = or <.

1.NBT.A.4

Not covered
Count by 10s to 120 starting at any number.
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1.NBT.B

Use place value understanding to add and subtract.

1.NBT.B.5

Partially covered
Add within 100.

1.NBT.B.6

Not covered
Calculate 10 more or 10 less than a given number mentally without having to count.
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1.NBT.B.7

Not covered
Add or subtract a multiple of 10 from another two-digit number, and justify the solution.
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