Count to 120 starting at any number. Read and write numbers. (1.NBT.1)

Understand that the two-digits in a two-digit number represent tens and ones. (1.NBT.2)

Compare two-digit numbers using >, =, and <. (1.NBT.3)

Add within 100. (1.NBT.4.)

Given a two-digit number, mentally find 10 more or less without counting. (1.NBT.5)

Subtract 10 from multiples of 10 (10-90). (1.NBT.6)

Vocabulary

Place Value: the value of the place of the digit in a number

Digit: A symbol used to show a number

Greater Than: (>) a symbol used to compare two numbers, with the greater number listed first. Example: 8 > 6

Less Than: (<) a symbol used to compare two numbers, with the lesser number given first. Example: 6 < 9

Equal to: (=) having the same value

Add: To join together sets to find the total or sum

Subtract: to find the difference when two groups are compared or to find out how many are left when items are taken away from a group

Activities At Home

Count objects such as jellybeans in a bowl, pennies in a jar, cheerios in a baggie, etc.

Find numbers in newspapers, magazines, or on items around the house.

Practice counting with your student while doing various activities-driving in the car, jumping rope, waiting in line at a store, etc.

Divide a deck of cards evenly between players. Each player flips over a card, the player with the highest card wins the cards. Continue until one player has all cards in the deck.

Put different items into groups and talk about which group has more or less items using the terms greater than and less than.

Roll dice and create numbers. Say what is 10 more or 10 less than that number.

Learning Links

Ten Frames

Compare Numbers

Make Combinations of Ten

Equivalent Numbers

Finding Numbers on a Hundreds Chart

Place Value

Even or Odd

Number Puzzles

Interactive Number Line

Grouping in 5's and 10's

Equal or Not Equal

Tens and Ones

Base Ten Blocks

Abacus: Tens and Ones

Hundred Chart

First Grade Operations and Algebraic Thinking

What Your Child Will Learn

Add and subtract within 20 to solve word problems. (1.OA.1)

Add three whole numbers to solve word problems. (1.OA.2)

Use properties of operations to add and subtract. (1.OA.3)

Understand subtraction as an unknown-addend problem. (1.OA.4)

Relate counting on or back to addition and subtraction. (1.OA.5)

Add and subtract within 20 and fluently within 10. Use strategies to add and subtract. (1.OA.6)

Understand the meaning of the equal sign and determine if equations are true. (1.OA.7)

Find the missing number in an addition or subtraction equation. (1.OA.8)

Vocabulary

Addition: To join two or more groups. 2 + 3 =

Subtraction: To find the difference when two groups are compared or to find out how many are left when items are taken away from a group.

Equation: a mathematical statement containing an equal sign, to show that two expressions are equal

Addend: Any numbers being added together (Example: 3 + 4 = 7, 3 and 4 are the addends)

Count On: start from any given number and count forward

Count Back: start from any given number and count backwards

Equal sign (=): A symbol used to show that two amounts have the same value. 384 = 384

Sum:The answer to an addition problem. In 2 + 3 = 5, 5 it is the sum.

Difference: The answer to a subtraction problem. In 8 – 3 = 5, 5 is the difference.

Number Sentence: A sentence that includes numbers, operation symbols ( +,- ), and a greater than or less than symbol ( >,< ) or equal sign. 5 + 3 = 8 25 < 32

Activities At Home

Roll single digit numbers and add them together.

Roll 2-digit or 3-digit numbers and add them together.

Add all the digits of your house number together.

Make a train with Legos or colored blocks. Write a number sentence for the different colors in the train.

Add the price of two items at a store.

Compare gas prices to find the lowest amount.

Start with 20 counters (beans, pennies, etc.) and roll two dice to make a 2-digit number. Subtract counters until you get to 0.

Give your student an addition or subtraction number sentence and ask them to make up a story problem to go with the number sentence.

Make a physical array with counters and record on paper using symbols.