Common Core
1.OA.C.6
27 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Grade 1 Math · Chapter 1 · Lesson 1
Look at dots and know how many, without counting.
Grade 1 Math · Chapter 1 · Lesson 2
See a big group as a full five, plus a little more.
Grade 1 Math · Chapter 1 · Lesson 4
Find every pair of parts that makes 6 or 7.
Grade 1 Math · Chapter 1 · Lesson 5
Find every pair of parts that makes 8 or 9.
Grade 1 Math · Chapter 1 · Lesson 6
Know fast how many more you need to make ten.
Grade 1 Math · Chapter 1 · Lesson 8
Put it all together with picture and story problems.
Grade 1 Math · Chapter 2 · Lesson 2
Start at one number instead of going back to one.
Grade 1 Math · Chapter 2 · Lesson 3
Use a number and a dot card together.
Grade 1 Math · Chapter 2 · Lesson 4
Swap the parts and the total stays the same.
Grade 1 Math · Chapter 2 · Lesson 6
Work out the number that is hiding.
Grade 1 Math · Chapter 2 · Lesson 7
Two groups the same size.
Grade 1 Math · Chapter 2 · Lesson 8
Use a double you know to work out one you do not.
Grade 1 Math · Chapter 2 · Lesson 9
Put every strategy together and spot the patterns.
Grade 1 Math · Chapter 3 · Lesson 3
Some go away, and you count what is left.
Grade 1 Math · Chapter 3 · Lesson 6
Three numbers make four sentences.
Grade 1 Math · Chapter 3 · Lesson 7
Some subtractions you can answer without working.
Grade 1 Math · Chapter 3 · Lesson 8
Your partners to ten work backwards too.
Grade 1 Math · Chapter 3 · Lesson 9
Mix them up and pick your own way.
Grade 1 Math · Chapter 4 · Lesson 5
Split a teen number into ten and the rest.
Grade 1 Math · Chapter 5 · Lesson 2
Move one across and the hard sum turns easy.
Grade 1 Math · Chapter 5 · Lesson 3
Now move two across.
Grade 1 Math · Chapter 5 · Lesson 4
Swap first, then make your ten.
Grade 1 Math · Chapter 5 · Lesson 5
Two good ways. Which is quicker here?
Grade 1 Math · Chapter 5 · Lesson 6
Break the teen number apart and take from the ten.
Grade 1 Math · Chapter 5 · Lesson 7
Use the same move on real problems.
Grade 1 Math · Chapter 8 · Lesson 5
Use the make-ten move on bigger numbers.
Grade 1 Math · Chapter 10 · Lesson 10
Look back at everything you learned this year.