孝敬父母是子女对父母应尽的道德义务、法律义务。( )
Spend more time talking with your parents, ______ they may not understand you.
如图所示,从温度与室温(20℃左右)相同的酒精里取出温度计。温度计的示数会( )
60×9=____
600+38=____
36÷4=____
90+420=____
325+475=____
98-15=____
72÷8=____
45÷9=____
16×7=____
0+15=____
150×0=____
92-9=____
320-207=____
129+350=____
200-170=____
400×5=____
900-750=____
7×700=____
3×222=____
5×9+6=____
22×6 ≈____
302×9 ≈____
298×3 ≈____
29×8 ≈____
508-397 ≈____
18+58= ____
59−29= ____
34+14= ____
1−56= ____
25+45= ____