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.
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.
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.
These are vocabulary words that students will be exposed to throughout the unit.