1st GRADE NUMBER ACTIVITIES: NUMBER AND OPERATIONS IN BASE TEN
Extend the counting sequence
1.NBT1 Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.
Missing Numbers Grids 150
Understand place value
1.NBT2 Understand that the two digits of a twodigit number represent amounts of tens and ones.Understand the following as special cases:
a. 10 can be thought of as a bundle of ten ones – called a “ten.”
b. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
c. The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).
Possible Activities:
Teens on the Ten Frame
Teens on the Ten Frame Book 1
Teens on the Ten Frame Book 2
Tens and Ones with Unifix Cubes
Make 10 Bundles
My Double TenFrame Riddle
Tens and Ones Game
Representing Two Digit Numbers with Base 10 Blocks
Base Ten Concentration (2 Digit)
1.NBT3 Compare two twodigit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.
Possible Activities:
Ten Frame Compare
Comparing Two Digit Numbers
Use place value understanding and properties of operations to add and subtract
1.NBT4 Add within 100, including adding a twodigit number and a onedigit number, and adding a twodigit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding twodigit numbers, one adds tens and tens, ones and ones, and sometimes it is necessary to compose a ten.
Possible Activities:
Add and Subtract 10 on the Number Line
What Number is...?
Ten More
Adding Sets of Ten
Sam's Base 10 Blocks
Adding 2 Digit and One Digit Numbers
Addition Split (2 digit + multiple of 10)
Subtraction Split
Lucky Six
