Year 3 in England

2nd grade number sense

20 2nd grade number sense skills, each with a worked example, free practice that checks every answer, and a printable worksheet. Start with a mixed review, or jump to the skill you need.

Mixed review

Ten questions drawn from every skill below.

Print a review worksheet Riddle puzzle on screen Bingo

Hundreds, tens and ones

CCSS 2.NBT.A.1CCSS 2.NBT.A.3England: Y2 Number and place valueEngland: Y3 Number and place value

Example

What is the value of the digit 8 in 861?

8 is in the hundreds place.
800

Answer: 800

Builds on: Tens and ones

Leads to: Compare three-digit numbers, Round to the nearest 10 or 100, Place value to one million, Roman numerals

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Compare three-digit numbers

CCSS 2.NBT.A.4England: Y3 Number and place value

Example

Choose the sign: 328 __ 333

328 < 333

Answer: <

Builds on: Hundreds, tens and ones, Compare two-digit numbers

Leads to: Negative numbers and absolute value, Order three-digit numbers, Compare four-digit numbers

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Skip count by 2s, 5s, 10s and 100s

CCSS 2.NBT.A.2England: Y2 Number and place value

Example

Count by 100s. What is missing? 300, 400, 500, 600, __

600 + 100 = 700

Answer: 700

Builds on: Count to 120

Leads to: Odd and even numbers, Equal groups and repeated addition, Times tables: 2, 5 and 10, Tell time to five minutes

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Odd and even numbers

CCSS 2.OA.C.3England: Y2 Number and place value

Example

Is 9 odd or even?

9 ends in 9.
9 is odd.

Answer: Odd

Builds on: Skip count by 2s, 5s, 10s and 100s

Leads to: Odd and even: rules for sums and products, Divisibility tests for 2, 5 and 10

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Count on and back across hundreds (to 1000)

CCSS 2.NBT.A.2England: Y2 Number and place valueEngland: Y3 Number and place value

Example

Keep counting: 97, 98, 99, 100, __

100 + 1 = 101
101

Answer: 101

Builds on: Count to 120, Hundreds, tens and ones

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Skip count by 5s, 10s and 100s from any number

CCSS 2.NBT.A.2England: Y2 Number and place valueEngland: Y3 Number and place value

Example

Count in hundreds: 539, 639, __, 839, 939

639 + 100 = 739
739

Answer: 739

Builds on: Skip count by 2s, 5s, 10s and 100s, Count in tens from any number

Leads to: Find the rule of a number pattern

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Count in threes

CCSS 2.OA.C.4England: Y2 Number and place valueEngland: Y3 Number and place value

Example

Count in threes: 9, 12, 15, 18, __

18 + 3 = 21
21

Answer: 21

Builds on: Count in twos

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Odd or even? Check by making pairs

CCSS 2.OA.C.3England: Y2 Number and place value

Example

Put these squares into pairs. Is the number odd or even? ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

12 makes 6 pairs.
Even.

Answer: Even

Builds on: Count in twos

Leads to: Even numbers as doubles, Predict whether a sum is odd or even

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Even numbers as doubles

CCSS 2.OA.C.3England: Y2 Number and place value

Example

Which even number is 6 + 6?

6 + 6 = 12
12

Answer: 12

Builds on: Odd or even? Check by making pairs

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Predict whether a sum is odd or even

CCSS 2.OA.C.3England: Y2 Number and place valueEngland: Y3 Number and place value

Example

Is 2 + 3 odd or even?

2 + 3 = 5
Odd.

Answer: Odd

Builds on: Odd or even? Check by making pairs, Add within 20

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Read base-ten blocks up to 1000

CCSS 2.NBT.A.1England: Y2 Number and place valueEngland: Y3 Number and place value

Example

To build 702 with base-ten blocks, how many tens rods do you need?

702 = 7 hundreds, 0 tens, 2 ones.
0

Answer: 0

Builds on: Hundreds, tens and ones

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Value of each digit in a three-digit number

CCSS 2.NBT.A.1England: Y2 Number and place valueEngland: Y3 Number and place value

Example

In 639, what is the tens digit worth?

639 = 600 + 30 + 9
30

Answer: 30

Builds on: Hundreds, tens and ones

Leads to: Write three-digit numbers in expanded form, Make the greatest and least number from digit cards

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Write three-digit numbers in expanded form

CCSS 2.NBT.A.3England: Y2 Number and place valueEngland: Y3 Number and place value

Example

489 = 400 + 80 + __

489 = 400 + 80 + 9
9

Answer: 9

Builds on: Value of each digit in a three-digit number

Leads to: Build a number from hundreds, tens and ones in any order, Rename numbers using hundreds, tens and ones

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Build a number from hundreds, tens and ones in any order

CCSS 2.NBT.A.3England: Y2 Number and place valueEngland: Y3 Number and place value

Example

500 + 60 + 2 = ?

Answer: 562

Builds on: Write three-digit numbers in expanded form

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Read and write number words to 1000

CCSS 2.NBT.A.3England: Y2 Number and place valueEngland: Y3 Number and place value

Example

Write "one hundred seventy-nine" in digits.

"one hundred seventy-nine" = 179

Answer: 179

Builds on: Read and write number words to 100, Hundreds, tens and ones

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Rename numbers using hundreds, tens and ones

CCSS 2.NBT.A.1aCCSS 2.NBT.A.1England: Y3 Number and place value

Example

What number is 5 hundreds, 17 tens and 5 ones?

500 + 170 + 5 = 675
675

Answer: 675

Builds on: Write three-digit numbers in expanded form, The same number made in different ways with tens and ones

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Find 10 or 100 more or less

CCSS 2.NBT.B.8England: Y2 Number and place valueEngland: Y3 Number and place value

Example

What is 100 more than 289?

289 + 100 = 389
389

Answer: 389

Builds on: Find 10 more and 10 less, Hundreds, tens and ones

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Order three-digit numbers

CCSS 2.NBT.A.4England: Y2 Number and place valueEngland: Y3 Number and place value

Example

Which is the least? 851, 518, 185, 158

158 < 185 < 518 < 851
158

Answer: 158

Builds on: Compare three-digit numbers

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Number lines to 1000

CCSS 2.MD.B.6CCSS 2.NBT.A.2England: Y2 Number and place valueEngland: Y3 Number and place value

Builds on: Find numbers on a number line to 100, Hundreds, tens and ones

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Make the greatest and least number from digit cards

CCSS 2.NBT.A.4England: Y2 Number and place valueEngland: Y3 Number and place value

Example

Use each digit card once: 6, 1, 9. What is the greatest three-digit number you can make?

Largest to smallest: 9, 6, 1
961

Answer: 961

Builds on: Value of each digit in a three-digit number

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