①44×25, =11×4×25, =11×(4×25), =11×100, =1100; ②6200÷25÷4, =6200÷(25×4), =6200÷100, =62; ③65×5-35÷5, =325-7, =318; ④362-(16+27)×4, =362-43×4, =362-172, =190; ⑤51.27-8.66-1.34, =51.27-(8.66+1.34), =51.27-10, =41.27; ⑥75+12.7+25+6.3, =(75+25)+(12.7+6.3), =100+19, =119. |