Maths 3 - Lesson 3 - CIE 3.1 (3.9)

Put together 10s and 1s to make a 2-digit number.

• Compose

• Decompose

• Regroup

• Exchange

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

Split a number into tens and ones or hundreds and ones.

• Compose

• Decompose

• Exchange

• Regroup

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

put hundreds, tens and ones together in different ways, to support calculating.

• Compose

• Decompose

• Exchange

• Regroup

Tags

CCSS.2.NBT.B.7

replacing one thing with another of the same value.

Ex: 10 ones = 10 = 1 tens

• Compose

• Decompose

• Regroup

• Exchange

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

Last Sunday, 174 children and 348 adults went to the cinema.

How many people went to the cinema last Sunday?

Mathematical Equivalence

ON

Tags

CCSS.3.OA.D.8

On Wednesday, 364 teachers and 257 students visited the museum.

How many people visited the museum on Wednesday?

Mathematical Equivalence

ON

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

A baker makes 278 strawberry cakes and 415 orange cakes.

How many cakes has the baker made?

Mathematical Equivalence

ON

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

The bookstore has 579 toy planes and 163 toy cars.

How many toys does the bookstore have?

Mathematical Equivalence

ON

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

A market stall has 458 watermelons left.

A box of 176 watermelons are delivered.

How many watermelons are on the stall now?

Mathematical Equivalence

ON

Tags

CCSS.3.OA.D.8

261 children and 319 adults visited the park today.

How many people visited the park today?

Mathematical Equivalence

ON

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2