(a) 1794 + 624 = 624 +
(b) (287 + 163) + 800 = 287 +(
+ 800)
(0) 432 +
= 111 + 432
(d) 97 + 561 =
+97
(e) (200 + 1020) + 3303 =
+ ( 200 +
( 0 + 268 =
(9) 469-0 =
(h) 1238 -
1238
(1) 29487
29487
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answer is zero 0
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