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ABACUS Big Friend Quiz ADDITION

Total questions: 20

Worksheet time: 25mins

Name
Class
Date
1.

+1 = +10 - (a)  

2.

+2 = +10 - (a)  

3.

+3 = +10 - (a)  

4.

+4 = +10 - (a)  

5.

+5 = +10 - (a)  

6.

+6 = +10 - (a)  

7.

+7 = +10 - (a)  

8.

+8 = +10 - (a)  

9.

+9 = +10 - (a)  

10.

(a)   = +10 - 6

11.

What is the formula for adding +6 using Big Friend?

4 lines
12.

Fill in: +4 = __ - __

a)

4

b)

0

13.

Which number is added as +10 - 2?

4 lines
14.

+9 is done using __ and __ beads.

4 lines
15.

+7 = +10 - (a)  

16.

If +10 - 5 is the formula, what is the number being added?

4 lines
17.

Fill in: +2 = __ - __

a)

2

b)

0

18.

What is the missing number: + (a)   = +10 - 1

19.

Which formula represents +3 in Big Friend method?

4 lines
20.

Which Big Friend formula uses subtraction of 8?

4 lines