1.NBT.C.4 - Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit 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 two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.
(9 results)
Comparing Two Digit Numbers
1.NBT.B.31.NBT.C.41.NBT.C.5
Comparing Numbers —Hearts
1.NBT.B.31.NBT.C.41.NBT.C.5
Add or Subtract Ten
Students will add or subtract ten in this workshee...
1.NBT.B.31.NBT.C.41.NBT.C.5
Adding Blocks
1.NBT.B.31.NBT.C.41.NBT.C.5
Base Ten Blocks and Addition
Students will add to multiples of ten in this work...
1.NBT.B.31.NBT.C.41.NBT.C.5
Comparing Numbers by the Hive!
Practice comparing two-digit numbers with this fun...
1.NBT.B.31.NBT.C.41.NBT.C.5
Addition with Multiples of 10
This 1st grade math worksheet allows learners to b...