Question

8.Сравни.
258 × a □ 258 × (a + 1)
128 × 5 □ 128 × 4 + 128
471 × 9□471 - 10 + 471
582 002 : 2 □ 58 202 : 2

5 × 20 □ 99 - 1
589 + 4 × О □ 589 × 0 + 4
800 000 - 1 □ 799 999 + 1
125 004 : 3 □ 1 250 040 : 30​

Answer 1

$258 \cdot a\,\,\boxed{?}\,\,258 \cdot (a + 1)\\258 \cdot a\,\,\boxed{?}\,\,258 \cdot a + 258\\0\,\,\boxed{?}\,\,258\\0\,\,\boxed{$

$128\cdot5\,\,\boxed{?}\,\,128\cdot4+128\\128\cdot5\,\,\boxed{?}\,\,128\cdot(4+1)\\128\cdot5\,\,\boxed{?}\,\,128\cdot5\\128\cdot5\,\,\boxed{=}\,\,128\cdot5$

$471\cdot9\,\,\boxed{?}\,\,471-10+471\\471\cdot9\,\,\boxed{?}\,\,471\cdot2-10\\471\cdot9\,\,\boxed{}\,\,471\cdot2-10$

$582\,002:2\,\,\boxed{?}\,\,58\,202:2\\582\,002\,\,\boxed{?}\,\,58\,202\\582\,002\,\,\boxed{}\,\,58\,202$

$5\cdot20\,\,\boxed{?}\,\,99-1\\100\,\,\boxed{?}\,\,98\\100\,\,\boxed{}\,\,98$

$589+4\cdot0\,\,\boxed{?}\,\,589\cdot0+4\\589+0\,\,\boxed{?}\,\,0+4\\589\,\,\boxed{?}\,\,4\\589\,\,\boxed{}\,\,4$

$800\,000-1\,\,\boxed{?}\,\,799\,999+1\\799\,999\,\,\boxed{?}\,\,800\,000\\799\,999\,\,\boxed{$

$125\,004:3\,\,\boxed{?}\,\,1\,250\,040:30\\125\,004:3\,\,\boxed{?}\,\,125\,004:3\\125\,004:3\,\,\boxed{=}\,\,125\,004:3$