Level 1 | Learn Simple Addition (2-digit) using Abacus, 2 rows part 20

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Improve your calculation ability, brain development, mental arithmetic and number sense-Become an Abacus Master. By soroban-dz.com

Exercise 1:

A	B	C	D	E	F	G	H	I	J
12	25	55	53	35	32	23	11	32	32
25	53	11	25	51	11	21	15	52	15

Exercise 2:

A	B	C	D	E	F	G	H	I	J
11	51	25	51	52	35	12	12	25	55
55	12	11	23	31	12	31	12	21	13

Exercise 3:

A	B	C	D	E	F	G	H	I	J
15	51	51	21	15	54	23	33	52	11
11	21	43	13	33	25	55	11	12	13

Exercise 4:

A	B	C	D	E	F	G	H	I	J
35	55	11	13	45	51	35	15	55	51
13	22	33	11	52	13	13	34	21	31

Exercise 5:

A	B	C	D	E	F	G	H	I	J
34	35	33	21	52	22	13	13	35	35
15	51	15	25	41	51	11	15	53	13

Exercise 6:

A	B	C	D	E	F	G	H	I	J
52	15	12	21	33	31	32	15	11	13
35	33	55	11	51	11	51	21	51	51

Exercise 7:

A	B	C	D	E	F	G	H	I	J
15	51	52	33	15	11	13	22	13	13
13	22	11	15	31	51	51	51	25	51