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Number skills

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Sample exercises

Grades K–2 · Number skills

A tray has 2 red counters and 5 blue counters. How many counters are there altogether?

Answer and explanation

7

2 + 5 = 7.

Grades K–2 · Number skills

Six blocks are in a tower. Two are removed. How many remain?

Answer and explanation

4

6 − 2 = 4.

Grades K–2 · Number skills

Which number comes immediately after 8 when counting upward by ones?

  1. 9
  2. 10
  3. 6
  4. 7
Answer and explanation

9

The next counting number is 9.

Grades K–2 · Number skills

Three pairs of socks contain how many individual socks?

Answer and explanation

6

Each pair has two socks; 2 + 2 + 2 = 6.

Grades K–2 · Number skills

Which group has more items: 5 buttons or 3 buttons?

  1. 5 buttons
  2. both equal
  3. 3 buttons
  4. neither can be counted
Answer and explanation

5 buttons

5 is greater than 3.

Grades K–2 · Number skills

Five counters are spread farther apart. Why are there still five counters?

Answer and explanation

No counters were added or removed; only their positions changed.

Accept a recount or conservation explanation.

Study notes

Count up to ten

Touch or point to each dot once. The last number is the total.

Grades K–K

Compare small numbers

Choose the greater quantity; zero is smaller than a positive whole number.

Grades K–1