Compare, Order & Skip Count
Lessons in this chapter
About Compare, Order & Skip Count
More About More Numbers takes the place value just learned and puts it to work, first for comparing, then for the skip counting that multiplication will later be built from.
Compare Numbers up to 99 and Order Numbers up to 99 ask kids to compare by place rather than by counting. Checking the tens digit first, and only looking at the ones if the tens match, is a rule that keeps working for three-digit numbers, for decimals, and for everything after.
Skip Count 2-Digit Numbers by 2, by 5 and by 10 then builds the three sequences kids will use most. Counting by tens is easiest because only the tens digit moves, counting by fives alternates between ending in 5 and 0, and counting by twos is the one that quietly introduces even numbers.
Skip counting is repeated addition in disguise, which is what makes it the real foundation of the multiplication tables that arrive in 2nd grade. A child fluent in counting by fives already has the five times table, just in a different order.
Five lessons, five worksheets, worked in the page. Compare Numbers up to 99 and Order Numbers up to 99 put the place value from the chapter before to use, and the three skip counting lessons, by 2, by 5 and by 10, are the ones quietly building the times tables. All five are free and scored as you go.
Frequently asked questions
Five lessons. Compare Numbers up to 99 and Order Numbers up to 99 come first, both leaning on place value, and then skip counting by 2, by 5 and by 10 fills out the rest. Comparing and ordering two-digit numbers is Number and Operations in Base Ten (1.NBT); skip counting by fives and tens is a second grade base ten standard in the Common Core, so this chapter meets it a year early.
By place. Compare the tens digits first, and only look at the ones if the tens are the same. That rule keeps working for every number system they meet afterwards.
Counting in steps bigger than one: 2, 4, 6, 8 or 5, 10, 15, 20. This chapter covers counting by 2, 5 and 10 with 2-digit numbers.
Because it is repeated addition, which is what multiplication is. A child who counts fluently in fives already knows the five times table before ever seeing it written as multiplication.
Tens, because only the tens digit changes and the pattern is obvious. Fives next, since they alternate between 0 and 5 endings, then twos.
Counting by two from zero gives exactly the even numbers. Kids usually notice the pattern before anyone names it, and 2nd grade's Odd and Even Numbers chapter picks it up formally.