U.6 Complete addition or subtraction sentences
Complete the addition sentence:
945 = 326 +
981 = 431 +
Complete the subtraction sentence:
684 − = 284
738 = 125 +
902 = 421 +
750 = 804 −
150 = 204 −
888 = 388 +
753 = 231 +
892 − = 492
620 = 210 +
685 = 243 +
230 = 312 −
678 = 208 +
913 = 115 +
365 = 428 −
756 = 236 +
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