Answer:
1) 4
2) 1.5
3) 8
4) 1
5) 5
6) 9
Step-by-step explanation:
1)
√16
= √(4x4)
= √(4)²
= 4
2)
√2.25
= √(9/4)
= √(3x3)/(2x2)
= √(3)²/(2)²
= 3/2
= 1.5
3)
6² ÷ 9 x 2
= 36 ÷ 9 x 2
= 36 x 1/9 x 2
= 36/9 x 2
= 12/3 x 2
= 4 x 2
= 8
4)
12-2 / 6+4
= 10/10
= 1
5)
√(16+9)
= √(25)
= √(5x5)
= √(5)²
= 5
6)
63 ÷ 3² + |2|
= 63 ÷ 9 + |2|
= 63/9 + |2|
= 21/3 + |2|
= 7 + |2|
= 9
