Find the Unknown Number

There were 323 postcards on the table. Morgan and Stephen use 125 of them. How many postcards were left?

• 198 postcards

• 0

• 448

• 498

349 cattle were in the field.  The farmer moved more cattle into the field.  Now there are 651 in the field.  How many cattle did the farmer put into the field? 

• 302

• 358

• 258

• 402

A shopkeeper bought 240 eggs and sold 148 eggs. How many eggs were left unsold?  

• 92

• 29

• 292

• 229

• 4

• 5

• 6

• 7

Find the unknown number

3 x b = 12

• 4

• 9

• 12

• 5

What is the unknown number?

6 x n = 42

• 7

• 5

• 6

• 8

4 + ____ = 7

5 + _____ = 12

20 + ______ = 25

_____ + 10 = 20