1H07.7 Uitwerkingen .........................................................................................................
1 |
12 + 8 + –4 × –3 = 12 + 8 + 12 = 32 [ 20 + 12 = 32 ]
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12 + ( 8 + -4 ) × 3 = 12 + ( 8 - 4 ) × 3 = 12 + 4 × 3 = 12 + 12 = 24 |
(12 + 8 + -4 ) × 3 = (12 + 8 - 4 ) × 3 = 16 × 3 = 48 |
2 |
3 × 6 : 9 = 18 : 9 = 2
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8 : 4 × 7 + 2 = 2 × 7 + 2 = 14 + 2 = 16 |
36 : 9 × 2 = 4 × 2 = 8
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8 : 4 × ( 7 + 2 ) = 8 : 4 × 9 = 2 × 9 = 18 |
36 : 9 × 12 : 6 = 4 × 12 : 6 = 48 : 6 = 8 |
( 8 + 4 ) × ( 7 – 2 ) = 12 × 5 = 60
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3 |
20 : 2 x 8 - 4 = 10 × 8 - 4 = 80 - 4 = 76 |
20 – 2 x 8 - 4 = 20 - 16 - 4 = 0 [ 4 -4 = 0 ] |
(25 – 7) : 9 x 4 = 18 : 9 × 4 = 2 × 4 = 8 |
4 |
-13 + 17 = 4
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-12 × 8 = -96
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-22 - -3 = -22 + 3 = -19
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-10 + -10 = -10 - 10 = -20
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15 : -3 = -5
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-12 × -8 = 96
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5 : -5 = -1
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50 - -30 = 50 + 30 = 80 |
5 |
3 x (9 + 6) –3 x –5 = 3 x 15 - 3 x -5 = 45 - -15 = 45 + 15 = 60 |
18 : 6 - (5 - 2) = 18 : 6 - 3 = 3 - 3 = 0
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12 + 3 x 6 = 12 + 18 = 30
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-6 + 3 x –5 = -6 + -15 = -6 - 15 = -21
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