题目内容
【题目】
直接写出得数.
4+4.73= ÷9= ×÷×= 4 ﹣4 =
375÷1 = ×2÷×2= 36+0.4= 5×32×2.5=
1÷0.9= 8×(12+0.5)= = =
= = = =
= = = =
= = = =
35+0.4= 8×(12+0.5)= 4×0.8×2.5×12.5= =
= = .
【答案】8.73;;;;;4;36.4;400;;100;8;;;;5.925;12;;2;;;5.7;3;;;35.4;100;100;20;;1110
【解析】
试题分析:×÷×,×2÷×2,先把除法变成乘法,再根据乘法结合律简算;
5×32×2.5先把32分解成8×4,再运用乘法结合律简算;
,运用加法结合律简算;
4×0.8×2.5×12.5运用乘法结合律简算;
先算乘法,再根据连续减去两个数等于减去这两个数的和简算;
先去掉小括号,然后再根据加法结合律简算,最后算括号外的乘法;
先把分解成,然后再运用加法结合律简算;
其它题目根据运算法则直接求解.
解:
4+4.73=8.73, ÷9=, ×÷×=, 4 ﹣4 =,
375÷1 =, ×2÷×2=4, 36+0.4=36.4, 5×32×2.5=400,
1÷0.9=, 8×(12+0.5)=100, =8, =,
=,
=, =2, =, =,
=5.7, =3, =, =,
35+0.4=35.4, 8×(12+0.5)=100, 4×0.8×2.5×12.5=100, =20,
=, =1110.
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