Unit 6
Comparing with Place Value
Unit 6 Overview:
In this unit, children will use their understanding of tens and ones to compare two-digit numbers using the symbols for “greater than” >, “less than” < and “equal to” = . Students will order and compare numbers using 100s chart, number lines and cubes. Students will mentally add and subtract ten from a number with the understanding that the digit in the tens place changes when adding or subtracting 10 from a number.
- Students will compare 2 two-digit numbers using the knowledge of place value represented by tens and ones, recording the results with the comparing symbols. (1.NBT.B.3)
- Students will, given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used. (1.NBT.C.5)
Home Activities
Comparing Two Numbers:
Understanding that each digit in a two-digit number represents a specific value in either the tens place or the ones places is the basis for comparing numbers using the language and symbols: greater than >, less than <, and equal to =.
Place Value Card Game- Use a deck of cards for this two player game. Place a deck of cards in between both players. Player one turns over the top two cards and makes a two digit number. Player two turns over the next two cards and makes a two digit number. Compare numbers. The player with the highest (or lowest) number wins the cards. Keep playing until the cards are gone. The player with the most cards at the end wins.
Resources
Websites/Videos/Games
- Comparing Numbers
- Comparing Number Values- Students compare whole numbers using the symbols <, >, =.(website)
- Fruit Shoot Comparing Numbers- Students select the correct symbol <, >, = to compare two number values. (website)
- Counting Caterpillars- Select a range of numbers to put in numerical order. (website)
- 10 More 10 Less
- 10 More 10 Less (Go Math Math Models)
- 10 Less Shoot Out- Students find ten less than a number in a soccer shoot out. (website)
- 10 More than 10- Students find 10 less than in an underwater adventure. (website)
10 More 10 Less
Students use hundreds charts, number lines and cubes to find 10 more or 10 less than a given number.
You can find numbers throughout your day with your child. Challenge them to tell you what would the number be if it was 10 more or 10 less.
Math Words
These are vocabulary words that students will be exposed to throughout the unit.
- compare
- comparing symbol
- digit(s)
- equal
- tens place
- fewer
- greater
- hundreds
- less
- two-digit number
- model
- more
- ones
- ones place
- place value
- represent
- symbol
- tens
- >
- <
- =