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)  

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






(                    )




2)  

Find the number of ones when 9 ones are subtracted from 22 tens
22 tens - 9 ones = ___ ones.






(                    )




3)  

How many ones will you get after you've subtracted 9 ones from 90 tens

90 ten(s) - 9 one(s) = ___ ones.






(                    )




4)  

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






(                    )




5)  

Find the number of ones when 2 ones are subtracted from 52 tens
52 tens - 2 ones = ___ ones.






(                    )




6)  

How many ones will you get after you've subtracted 7 ones from 14 tens

14 ten(s) - 7 one(s) = ___ ones.






(                    )




7)  

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






(                    )




8)  

Find the number of ones when 2 ones are subtracted from 24 tens
24 tens - 2 ones = ___ ones.






(                    )




9)  

How many ones will you get after you've subtracted 7 ones from 8 tens

8 ten(s) - 7 one(s) = ___ ones.






(                    )




10)  

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






(                    )




 

1)  

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



2)  

Find the number of ones when 9 ones are subtracted from 22 tens
22 tens - 9 ones = ___ ones.





Answer: 4


SOLUTION 1 :

Step 1:  22 tens = 22 x 10

                          = 220

Step 2: 9 ones = 9 x 1

                        = 9

Step 3: 220 - 9 = 211



3)  

How many ones will you get after you've subtracted 9 ones from 90 tens

90 ten(s) - 9 one(s) = ___ ones.





Answer: 1


SOLUTION 1 :

Step 1:  90 tens = 90 x 10

                          = 900

Step 2: 9 ones = 9 x 1

                        = 9

Step 3: 900 - 9 = 891



4)  

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



5)  

Find the number of ones when 2 ones are subtracted from 52 tens
52 tens - 2 ones = ___ ones.





Answer: 3


SOLUTION 1 :

Step 1:  52 tens = 52 x 10

                          = 520

Step 2: 2 ones = 2 x 1

                        = 2

Step 3: 520 - 2 = 518



6)  

How many ones will you get after you've subtracted 7 ones from 14 tens

14 ten(s) - 7 one(s) = ___ ones.





Answer: 3


SOLUTION 1 :

Step 1:  14 tens = 14 x 10

                          = 140

Step 2: 7 ones = 7 x 1

                        = 7

Step 3: 140 - 7 = 133



7)  

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



8)  

Find the number of ones when 2 ones are subtracted from 24 tens
24 tens - 2 ones = ___ ones.





Answer: 1


SOLUTION 1 :

Step 1:  24 tens = 24 x 10

                          = 240

Step 2: 2 ones = 2 x 1

                        = 2

Step 3: 240 - 2 = 238



9)  

How many ones will you get after you've subtracted 7 ones from 8 tens

8 ten(s) - 7 one(s) = ___ ones.





Answer: 1


SOLUTION 1 :

Step 1:  8 tens = 8 x 10

                          = 80

Step 2: 7 ones = 7 x 1

                        = 7

Step 3: 80 - 7 = 73



10)  

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