Mental Arithmetic

3000+30+200+1 write the standard form

• 3321

• 3023

• 2314

• 3231

1000 more than 3300

• 4400

• 4300

• 4100

• 31000

How many odd numbers are there between 50 and 65?

• 7

• 2

• 5

• 8

The smallest 4 digit number using 0,0,2 and 2 is

• 2200

• 2002

• 0022

• 2020

What must be added to 99 to get 100?

• 19

• 2

• 1

• 0

21 hundred is same as

• 210

• 2100

• 1200

• 21000

Write 1409

• One hundred nine

• Fourteen hundred nine

• One thousand four hundred nine

• One thousand four

294+_----=30 tens

• 6

• 7

• 5

• 4

43-9=

• 32

• 34

• 36

• 38

?- 350=100

• 200

• 450

• 300

• 100