题目内容
(1)16×(
-
+0.125)
(2)3
×7+6.25÷
(3)1111×37+9999×7
(4)36÷(
-
+
)
| 15 |
| 16 |
| 5 |
| 8 |
(2)3
| 3 |
| 4 |
| 1 |
| 7 |
(3)1111×37+9999×7
(4)36÷(
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 12 |
(1)16×(
-
+0.125),
=16×
-
×16+
×16,
=15-10+2,
=7;
(2)3
×7+6.25÷
,
=3.75×7+6.25×7,
=(3.75+6.25)×7,
=10×7,
=70;
(3)1111×37+9999×7,
=1111×37+1111×9×7,
=1111×(37+63),
=1111×100,
=111100;
(4)36÷(
-
+
),
=36÷
,
=36×4,
=144.
| 15 |
| 16 |
| 5 |
| 8 |
=16×
| 15 |
| 16 |
| 5 |
| 8 |
| 1 |
| 8 |
=15-10+2,
=7;
(2)3
| 3 |
| 4 |
| 1 |
| 7 |
=3.75×7+6.25×7,
=(3.75+6.25)×7,
=10×7,
=70;
(3)1111×37+9999×7,
=1111×37+1111×9×7,
=1111×(37+63),
=1111×100,
=111100;
(4)36÷(
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 12 |
=36÷
| 1 |
| 4 |
=36×4,
=144.
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