3. Tiaki is fixing part of his fence. The pickets he needs are .68m long each. How many metres of timber does he need to cut up 45 pickets? answer: 30.6m
0.68 x 20 = 13.6
0.68 x 20 = 13.6
0.68 x 5 = 3.4
Add altogether equals 30.6
If the timber comes in 5m lengths only what is the minimum amount of lengths he needs to have enough for 45 pickets? answer:225
45 x 5 =225.
40 x 5 = 200
5 x 5 = 25
200 + 25 = 225
The timber is $3.55/m. How much will he have spent? answer: $106.50.
30 x 3.55 = 106.5
30 x 3 = 90
30 x 0.55 = 16.5
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