# 1.4 Números hasta 99

## Unit Goals

• Students develop an understanding of place value for numbers up to 99.

### Section A Goals

• Add and subtract multiples of 10.
• Represent the base-ten structure of multiples of 10 up to 90 using towers of 10, drawings, numbers, or words.

### Section B Goals

• Add and subtract multiples of 10.
• Represent the base-ten structure of numbers up to 99 using drawings, numbers, and words.
• Understand that the two digits of a two-digit number represent amounts of tens and ones.

### Section C Goals

• Compare 2 two-digit numbers based on the values of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.>

### Section D Goals

• Represent two-digit numbers in different ways, using different amounts of tens and ones.

### Format

#### Blackline Masters

For activities with important visual aids

pdfdocx (n/a)

#### Teacher Presentation Materials

Teacher presentation materials (with Spanish)

pdfdocx

#### Cumulative Practice Problems

All practice problems from the unit (with Spanish)

pdfdocx