Fill in the blanks to make each of the following a true statement:

(i) 378 + 1024 = 1024 + ….

(ii) 337 + (528 + 1164) = (337 + ….) + 1164

(iii) (21 + 18) + …. = (21 + 13) + 18

(iv) 3056 + 0 = …. = 0 + 3056

(i) According to the Commutative Property of Addition: a + b = b + a.

378 + 1024 = 1024 + 378.

(ii) According to the Associative Law of Addition: a + (b + c) = (a + b) + c.

337 + (528 + 1164) = (337 + 528) + 1164.

(iii) Using the Commutative and Associative properties of Addition:

(21 + 18) + 13 = (21 + 13) + 18.

(iv) According to the Additive Identity property, adding 0 to any whole number gives the number itself.

3056 + 0 = 3056 = 0 + 3056.