**Question 1**:

Karen has 18 m of ribbon to tie 16 bars of chocolate and 28 boxes of sweets. A bar of chocolate needs 24 cm of ribbon and a box of sweets needs 38 cm of ribbon.

Calculate the length, in m, of the remaining ribbon.

*Length of ribbon needed*

**Solution**:= (16 × 24 cm) + (28 × 38 cm)

= 384 cm + 1064 cm

= 1448 cm

= 14.48 m

Length of remaining ribbon

= 18 m – 14.48 m

=

**3.52 m**

**Question 2**:

The length of a red string is 4 m 80 cm. The length of a brown string is ⅔ of the length of the red string. The length of a black string is twice the length of the brown string.

Calculate the total length, in m, of the brown and the black strings.

**Solution**:$\begin{array}{l}\text{Lengthofbrownstring}\\ =\frac{2}{3}\times 4\text{m}80\text{cm}\\ =\frac{2}{3}\times 4.8\\ =3.2\text{m}\\ \\ \text{Lengthofblackstring}\\ =2\times 3.2\text{m}\\ =6.4\text{m}\\ \\ \text{Totallength}=3.2\text{m}+6.4\text{m}\\ =9.6\text{m}\end{array}$

**Question 3**:

Kelly has 13 m of cloth. She uses it to make 6 curtains and 4 tablecloths. Each curtain requires 1.25 m of cloth and each tablecloth requires 90 cm of cloth.

What is the length, in m, of the remaining cloth?

*Length of cloth used to make curtains*

**Solution**:= 6 × 1.25 m

= 7.5 m

Length of cloth used to make tablecloth

= 4 × 90 cm

= 360 cm

= 3.6 m

Length of the remaining cloth

= 13 – 7.5 – 3.6

=

**1.9 m**

**Question 4**:

A rope measuring 6 m 30 cm is cut into 1.6 m, 96 cm and the remainder into two equal parts. Find the length of each of the remaining parts, in cm.

*(6 m 30 cm – 1.6 m – 96 cm) ÷ 2*

**Solution**:= (630 cm – 160 cm – 96 cm) ÷ 2

= 374 cm ÷ 2

=

**187 cm**