Answer:
B.
1. 16 - (7+8) = 1
16 - 15 = 1
1 = 1
2. (16-7) + 8 = 17
9 + 8 = 17
17 = 17
3. 3(5 - 4)= 3
3 (1) = 3
3 = 3
4. 12 ÷ (2+ 4)= 2
12 ÷ 6 = 2
2 = 2
5. 18 ÷ (6X3) = 1
18 ÷ 18 = 1
1= 1
6. 20 - 8+ 4 = 8
20 - (8+4) = 8
20 - 12 = 8
8 =8
C.
1. 37 - [45 - 4 x (39 - 29)]
= 37 - [45 - 4 x (10)]
= 37 - (45 - 40)
=37 - 5
= 32
2. 12 + 3 x {3 x [4 + (9 - 8) - 2] - 3}
= 12 + 3 x [3 x (4 + 1 - 2) - 3 ]
= 12 + 3 x [ 3 x (3) - 3]
= 12+3 x ( 9 - 3)
= 12 + 3 x (6)
= 12 + 18
= 30
3. 14 - 2 x { 2 + 5 [ 7 + 3 x (15 -12) - 15] }
= 14 - 2 x { 2 + 5 [ 7 + 3 x (3) - 15] }
= 14 -2 x [ 2 + 5 ( 7 + 9 - 15)]
= 14 - 2 x [ 2 + 5 (1) ]
= 14 - 2 x ( 7)
= 14 - 14
= 0
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Answers & Comments
Answer:
B.
1. 16 - (7+8) = 1
16 - 15 = 1
1 = 1
2. (16-7) + 8 = 17
9 + 8 = 17
17 = 17
3. 3(5 - 4)= 3
3 (1) = 3
3 = 3
4. 12 ÷ (2+ 4)= 2
12 ÷ 6 = 2
2 = 2
5. 18 ÷ (6X3) = 1
18 ÷ 18 = 1
1= 1
6. 20 - 8+ 4 = 8
20 - (8+4) = 8
20 - 12 = 8
8 =8
C.
1. 37 - [45 - 4 x (39 - 29)]
= 37 - [45 - 4 x (10)]
= 37 - (45 - 40)
=37 - 5
= 32
2. 12 + 3 x {3 x [4 + (9 - 8) - 2] - 3}
= 12 + 3 x [3 x (4 + 1 - 2) - 3 ]
= 12 + 3 x [ 3 x (3) - 3]
= 12+3 x ( 9 - 3)
= 12 + 3 x (6)
= 12 + 18
= 30
3. 14 - 2 x { 2 + 5 [ 7 + 3 x (15 -12) - 15] }
= 14 - 2 x { 2 + 5 [ 7 + 3 x (3) - 15] }
= 14 -2 x [ 2 + 5 ( 7 + 9 - 15)]
= 14 - 2 x [ 2 + 5 (1) ]
= 14 - 2 x ( 7)
= 14 - 14
= 0
Verified answer
Hi, I just could answer letter B.1. (7+8)
2. (16-7)
3. (5-4)
4. (2+4)
5. (6x3)
6. (8+4)
~Reign40