五年级数学-计算题
第一部分:计算题(注意计算时要看清小数点,数位对齐)
463+7= 2400.7+3= 126.3÷0.021= 1.55×0.7= 0.43.2×50= 3.51.25-0.5= 300
÷8= 5×80= 0.9÷0.03= 6.8-2.4×5= 3.6÷0.5= 1÷3= 7.2-1.2+6.7=
×0.75÷1.5×0.75= ×7+10.7= ÷3= ÷0.9-4= ×0.01÷0.1= 1
58171913193 + = + = - = + = 9988242436363411111123 + = - = - = - = 77884913132、简便方法计算,写出主要计算过程。
(1)6.12+37 +2.88+47 (2)295424 -(24 -9 ) (3)
(4) 79 +310 -29 +1710 (5) 715 +787
12 +15 -12 (6)
2
1811 -(711 + 3
8 )
15311- 8-58
3、解方程。(12分)
13145
(1) 2x-8.125=18.125 (2) 3x+ = (3) x+ =1
(4) 2x-556 =6 (5) x
9-(314 +417 )=23
99-(74 - 38 )=7
8 (6) x