# Skip count, multiply, and divide whole numbers subsequence

Note that Khan Academy has skip-counting by 5s and 10s in 2nd grade. For 3rd grade, Khan Academy jumps right into multiplication. For example, 3 groups of 7 is 7 + 7 + 7 = 3 * 7. IXL has skip-counting by 2s, 5s, and 10s in 1st, 2nd, and 3rd grade. I think 1st graders could skip-count by 2s, 5s, and 10s. Then 2nd graders could tackle skip-counting in 3s, and 4s. Then 3rd graders could continue as usual with multiplication.

- Skip-counting by 2s, 5s, and 10s (1st grade)
- Skip-counting by 3s and 4s (2nd grade)
- Multiplication as repeated addition (3rd grade)
- Division as repeated subtraction (3rd grade)
- Multiply 1-digit numbers by 10, 100, and 1000 (4th grade)
- Multiply 1-digit numbers by multiples of 10, 100, and 1000 (4th grade)
- Multiply 2-digit numbers using the method of partial products (4th grade)
- Divide multiples of 10, 100, and 1,000 by 1-digit numbers (4th grade)
- Divide using place value (4th grade)
- Multiply any two numbers using the method of partial products (5th grade)
- Divide any two numbers using long division (5th grade)