Scroll:Whole Numbers >> Estimate sums and differences of whole numbers >> mcq (94)


Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.



 

1)  

How many ones will you get after you've subtracted 2 ones from 69 tens

69 ten(s) - 2 one(s) = ___ ones.






(                    )




2)  

Find the number of ones when 7 ones are subtracted from 46 tens
46 tens - 7 ones = ___ ones.






(                    )




3)  

Find the number of ones when 1 one are subtracted from 1 ten
1 ten - 1 one = ___ ones.






(                    )




4)  

How many ones will you get after you've subtracted 1 ones from 47 tens

47 ten(s) - 1 one(s) = ___ ones.






(                    )




5)  

Find the number of ones when 4 ones are subtracted from 45 tens
45 tens - 4 ones = ___ ones.






(                    )




6)  

Find the number of ones when 1 one are subtracted from 1 ten
1 ten - 1 one = ___ ones.






(                    )




7)  

How many ones will you get after you've subtracted 4 ones from 89 tens

89 ten(s) - 4 one(s) = ___ ones.






(                    )




8)  

Find the number of ones when 3 ones are subtracted from 35 tens
35 tens - 3 ones = ___ ones.






(                    )




9)  

Find the number of ones when 1 one are subtracted from 1 ten
1 ten - 1 one = ___ ones.






(                    )




10)  

How many ones will you get after you've subtracted 1 ones from 36 tens

36 ten(s) - 1 one(s) = ___ ones.






(                    )




 

1)  

How many ones will you get after you've subtracted 2 ones from 69 tens

69 ten(s) - 2 one(s) = ___ ones.





Answer: 2


SOLUTION 1 :

Step 1:  69 tens = 69 x 10

                          = 690

Step 2: 2 ones = 2 x 1

                        = 2

Step 3: 690 - 2 = 688



2)  

Find the number of ones when 7 ones are subtracted from 46 tens
46 tens - 7 ones = ___ ones.





Answer: 2


SOLUTION 1 :

Step 1:  46 tens = 46 x 10

                          = 460

Step 2: 7 ones = 7 x 1

                        = 7

Step 3: 460 - 7 = 453



3)  

Find the number of ones when 1 one are subtracted from 1 ten
1 ten - 1 one = ___ ones.





Answer: 2


SOLUTION 1 :

Step 1: 1 ten = 1 x 10

                     = 10

Step 2: 1 one = 1 x 1

                       = 1

Step 3: 10 - 1 = 9



4)  

How many ones will you get after you've subtracted 1 ones from 47 tens

47 ten(s) - 1 one(s) = ___ ones.





Answer: 1


SOLUTION 1 :

Step 1:  47 tens = 47 x 10

                          = 470

Step 2: 1 ones = 1 x 1

                        = 1

Step 3: 470 - 1 = 469



5)  

Find the number of ones when 4 ones are subtracted from 45 tens
45 tens - 4 ones = ___ ones.





Answer: 3


SOLUTION 1 :

Step 1:  45 tens = 45 x 10

                          = 450

Step 2: 4 ones = 4 x 1

                        = 4

Step 3: 450 - 4 = 446



6)  

Find the number of ones when 1 one are subtracted from 1 ten
1 ten - 1 one = ___ ones.





Answer: 2


SOLUTION 1 :

Step 1: 1 ten = 1 x 10

                     = 10

Step 2: 1 one = 1 x 1

                       = 1

Step 3: 10 - 1 = 9



7)  

How many ones will you get after you've subtracted 4 ones from 89 tens

89 ten(s) - 4 one(s) = ___ ones.





Answer: 1


SOLUTION 1 :

Step 1:  89 tens = 89 x 10

                          = 890

Step 2: 4 ones = 4 x 1

                        = 4

Step 3: 890 - 4 = 886



8)  

Find the number of ones when 3 ones are subtracted from 35 tens
35 tens - 3 ones = ___ ones.





Answer: 4


SOLUTION 1 :

Step 1:  35 tens = 35 x 10

                          = 350

Step 2: 3 ones = 3 x 1

                        = 3

Step 3: 350 - 3 = 347



9)  

Find the number of ones when 1 one are subtracted from 1 ten
1 ten - 1 one = ___ ones.





Answer: 3


SOLUTION 1 :

Step 1: 1 ten = 1 x 10

                     = 10

Step 2: 1 one = 1 x 1

                       = 1

Step 3: 10 - 1 = 9



10)  

How many ones will you get after you've subtracted 1 ones from 36 tens

36 ten(s) - 1 one(s) = ___ ones.





Answer: 3


SOLUTION 1 :

Step 1:  36 tens = 36 x 10

                          = 360

Step 2: 1 ones = 1 x 1

                        = 1

Step 3: 360 - 1 = 359