
直接写出得数:16.15÷1.7+0.85÷1.7=______199+99×99=______ 1 2 + 1 3 - 1
直接写出得数:16.15÷1.7+0.85÷1.7=______199+99×99=______12+13-14+15-16=______613+458+5.375+32...
直接写出得数:16.15÷1.7+0.85÷1.7=______199+99×99=______ 1 2 + 1 3 - 1 4 + 1 5 - 1 6 =______ 6 1 3 +4 5 8 +5.375+3 2 3 =______10.1×99-9.9=______3×3 2 + 9 10 + 9 100 + 9 1000 =______.
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(1)16.15÷1.7+0.85÷1.7, =(16.15+0.85)÷1.7, =17÷1.7, =10; (2)199+99×99, =199+99×(100-1), =199+99×100-99, =199+9900-99, =9900+(199-99), =9900+100, =10000; (3)
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(4) 6
=(6
=10+10, =20; (5)10.1×99-9.9, =101×9.9-9.9, =(101-1)×9.9, =100×9.9, =990; (6)3×3 2 +
=3×9+
=27+0.9+0.09+0.009, =27.999. 故答案为:10,10000,
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