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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 3 - Mathematics
5.1 Mental Addition

Method:
  1. Add the expression within parentheses first.
  2. Add the result to the third number.

Example: (5+4)+3
  1. Add 5 and 4. The result is 9.
  2. Add 3 and 9.
Answer:12

Directions: Find the sum of the following. Also write at least ten examples of your own.
Q 1: 2+4+6
14
18
12
15

Q 2: (3+4)+8
12
15
14
18

Q 3: 3+(4+5)
11
17
12
18

Q 4: 5+(6+4)
19
15
9
17

Q 5: 3+5+8
16
17
11
13

Q 6: 4+9+5
13
19
11
18

Q 7: 1+8+4
14
11
16
13

Q 8: (2+3)+9
17
14
11
19

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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