Adding Mentally Lesson

2 Slides • 5 Questions

1

Adding Mentally

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2

Expanding numbers

Recap on Expanding

3

Multiple Choice

add 325 and 244 mentally using the expanded form

1

300 + 200 = 500

20 + 40 = 60

5 + 4 = 9

500 +60 +9 = 569

2

200 + 400 =600
30 + 20 = 50
5 + 4= 9
600+ 50 +9 = 659

4

Multiple Choice

Use a pencil and a paper to expand and add mentally 329 + 140

1

569

2

367

3

469

5

Multiple Choice

Use a pencil and a paper to expand and add mentally

217 + 221

1

471

2

438

3

440

6

Multiple Choice

Use a pencil and a paper to expand and add mentally 711 + 365

1

1067

2

1076

3

976

7

Multiple Choice

Use a pencil and a paper to expand and add mentally

555 +218

1

773

2

763

3

800

Adding Mentally

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