Virginia SOL Math / Kindergarten / Number & Number Sense

K.NS.2

Numbers to 30

What you'll learn

  • Count and tell how many in a group up to 30
  • Read and write numbers up to 30
  • Compare two groups to tell more, fewer, or the same

Words to know

More —
a bigger amount
Fewer —
a smaller amount
Same —
an equal amount
Group —
a set of objects together
How many —
the number in a group

Why it matters Comparing groups helps us share fairly and know who has more, like counting stickers or crackers.

Worked examples

Model ItI do

Count these dots and tell how many: 5 dots in a row.

Touch each dot one time as you count: 1, 2, 3, 4, 5. There are 5 dots in all. The last number you say tells how many.

Try It TogetherWe do

One plate has 4 apples. Another plate has 7 apples. Which has more?

Count each plate: 4 apples and 7 apples. Since 7 is farther along when we count, 7 is more than 4. The plate with 7 apples has more.

Now YouYou do

One box has 6 crayons. Another box has 6 crayons. Are they more, fewer, or the same?

Count both boxes and compare. Check your answer in the back of this chapter.

Practice

Mastered 0 of 11

Warm-up

Ease in with the basics.

  1. 1.Count these stars and tell how many: star, star, star. How many stars?

  2. 2.Which is more: 2 or 8?

  3. 3.One plate has 4 cookies. Another plate also has 4 cookies. Are they more, fewer, or the same?

On Level

The core Quick Check from the book.

  1. 1.Count and tell how many: 8 stars.

  2. 2.Which is more: 3 or 9?

  3. 3.Which is fewer: 10 or 6?

  4. 4.Are 5 dogs and 5 cats the same number?

  5. 5.Write the number that means ten.

Challenge

Stretch your thinking.

  1. 1.One box has 24 blocks. Another box has 18 blocks. Which box has fewer blocks?

  2. 2.Count and tell how many: there are twenty-nine buttons. Write that number.

  3. 3.One jar has 30 beads. Another jar has 21 beads. Which jar has more beads?