1. 18 : 3 × 2 = __________= _____
28 + (56+ 4) = _________= _____
38 + 14 + 12 + 16 = _____________=________
10 – 4 × ( 9 – 8 ) = _______________= _______
50 – 6 × 7 = __________= _______
20 × 40 = _____
70 × 30 = _____
10 × 100 = ____
500 : 100 = ____
100 : 10 = ____
250 : 50 = ____
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4 × 6 ____ 8 × 3
12 : 4 ____ 12 : 3
146 _____ 416
173x1____ 137:1