Scroll:Addition - one digit >> Adding doubles >> mcq (4010)
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)
3
2
+ 10 ________
15
( )
2)
5
4
+ 5 ________
14
( )
3)
3
5
+ 4 ________
12
( )
4)
2
2
+ 7 ________
11
( )
5)
2
7
+ 7 ________
16
( )
6)
7
4
+ 5 ________
16
( )
7)
3
3
+ 8 ________
14
( )
8)
6
7
+ 8 ________
21
( )
9)
3
6
+ 4 ________
13
( )
10)
6
2
+ 3 ________
11
( )
1)
3
2
+ 10 ________
15
SOLUTION 1 :
Hint: Start by adding first two of the numbers to make a 5.
First, add 3 and 2 to make a 5: 3+2 + 10 =
5 + 10 =
Now add 5 and 10:
5 + 10 = 15
The sum is 15.
2)
5
4
+ 5 ________
14
SOLUTION 1 :
Hint: Start by adding first two of the numbers to make a 9.
First, add 5 and 4 to make a 9: 5+4 + 5 =
9 + 5 =
Now add 9 and 5:
9 + 5 = 14
The sum is 14.
3)
3
5
+ 4 ________
12
SOLUTION 1 :
Hint: Start by adding first two of the numbers to make a 8.
First, add 3 and 5 to make a 8: 3+5 + 4 =
8 + 4 =
Now add 8 and 4:
8 + 4 = 12
The sum is 12.
4)
2
2
+ 7 ________
11
SOLUTION 1 :
Hint: Start by adding first two of the numbers to make a 4.
First, add 2 and 2 to make a 4: 2+2 + 7 =
4 + 7 =
Now add 4 and 7:
4 + 7 = 11
The sum is 11.
5)
2
7
+ 7 ________
16
SOLUTION 1 :
Hint: Start by adding first two of the numbers to make a 9.
First, add 2 and 7 to make a 9: 2+7 + 7 =
9 + 7 =
Now add 9 and 7:
9 + 7 = 16
The sum is 16.
6)
7
4
+ 5 ________
16
SOLUTION 1 :
Hint: Start by adding first two of the numbers to make a 11.
First, add 7 and 4 to make a 11: 7+4 + 5 =
11 + 5 =
Now add 11 and 5:
11 + 5 = 16
The sum is 16.
7)
3
3
+ 8 ________
14
SOLUTION 1 :
Hint: Start by adding first two of the numbers to make a 6.
First, add 3 and 3 to make a 6: 3+3 + 8 =
6 + 8 =
Now add 6 and 8:
6 + 8 = 14
The sum is 14.
8)
6
7
+ 8 ________
21
SOLUTION 1 :
Hint: Start by adding first two of the numbers to make a 13.
First, add 6 and 7 to make a 13: 6+7 + 8 =
13 + 8 =
Now add 13 and 8:
13 + 8 = 21
The sum is 21.
9)
3
6
+ 4 ________
13
SOLUTION 1 :
Hint: Start by adding first two of the numbers to make a 9.
First, add 3 and 6 to make a 9: 3+6 + 4 =
9 + 4 =
Now add 9 and 4:
9 + 4 = 13
The sum is 13.
10)
6
2
+ 3 ________
11
SOLUTION 1 :
Hint: Start by adding first two of the numbers to make a 8.