Question

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Answer 1

1. 1387 - (687 + 321) = 379.

2. 2453 - (353 + 648) = 1452.

3. 35 × 13 + (16 + 32 × 13) = 817.

1) 32 × 13 = 416.

2) 416 + 16 = 432.

3) 35 × 11 = 385.

4) 432 + 385 = 817.

35 × 13 + (16 + 32 × 15) = 951.

1) 32 × 15 = 480.

2) 480 + 16 = 496.

3) 35 × 13 = 455.

4) 455 + 496 = 951.

35 × 23 + (16 + 32 × 24) = 1589.

1) 32 × 24 = 768.

2) 768 + 16 = 784.

3) 35 × 23 = 805.

4) 805 + 784 = 1589.