Question

Answer 1

2: \(=100\cdot1987=198700\)

Answer 2

1) 29+132+237+868+763
= 29+(132+868)+(237+763)
= 29+1000+1000
= 2029
2) 25.1987.4
= 25.4.1987
= 100.1987
= 198700
3) 2⁵.3+4.[(26-22)²:4+6]-2021⁰
= 32.3+4.[4²:4+6]-1
= 96+4.[16:4+6]-1
= 96+4.[4+6]-1
= 96+4.10-1
= 96+40-1
= 136-1
= 135