fast calculation ability

Basic-A and Basic-B

the result of 2+5-5

• 3

• 6

• 0

• 2

the result of 9-7+2

• 4

• 2

• 8

• 0

the result of 4-3+7

• 10

• 12

• 8

• 15

the result of 9-7+1

and the result of 2-1+6

• 3 and 6

• 5 and 7

• 3 and 7

• 4 and 3

the result of 5+3-1

and the result of 5-5+9

• and the result of 9-7+1

• 1. 1. (9) 2.(3) 3. (3)

• 1. 1. (7) 2. (9) 3. (3)

• 1. 1.(11). 2. (9) 3.(5)

the result of 5+3-1

and the result of 5-5+9

• and the result of 9-7+1

• 1. 1. (9) 2.(3) 3. (3)

• 1. 1. (7) 2. (9) 3. (3)

• 1. 1.(11). 2. (9) 3.(5)

Result of 5-5+2=2

• I do not agree

• Yes, I agree

What is the result of 3+4-2?

• 5

• 6

• 7

• 8

Calculate the result of 6-2+5.

• 7

• 8

• 9

• 10

Find the value of 8-3+1.

• 4

• 5

• 6

• 7