Length (Review)

What is the likely height of a classroom door?

• 2 cm

• 2 m

• 20 cm

• 200 m

Answer explanation

The classroom door is taller than 1 m. So it cannot be 2 cm or 20 cm.

200 m is about the height of a building.

Look at the picture.

What is the length of the knife?

​ (a)   cm

• 7
• 9
• 2
• 8

Answer explanation

2 methods

9 - 2 = 9

or

start at 0

Look at the picture.

Fill in the blanks.

The length of the marker is ​ (a)   .

The length of the pen knife is ​ (b)   .

• 11 cm
• 8 cm
• 10 cm
• 2 cm
• 9 cm
• 0 cm

Look at the picture.

What is the total length of the marker and the penknife?

Their total length is __ cm

Answer explanation

Marker : 11 cm

Pen knife : 8 cm

Total length = 11 + 8 = 19 cm

Look at the picture.

The marker is ​ (a)   longer than the penknife.

• 3 cm
• 19 cm

Answer explanation

Marker : 11 cm

Pen knife : 8 cm

to find how much longer, we subtract.

11 cm - 8 cm = 3 cm

Look at the picture.

The penknife is ​ (a)   shorter than the marker.

• 3 cm
• 19 cm

Answer explanation

Marker : 11 cm

Pen knife : 8 cm

to find how much shorter, we subtract.

11 cm - 8 cm = 3 cm

What are their lengths?

Screw : ​ (a)  

Spoon : ​ (b)  

Eraser : ​ (c)  

Paper clip : ​ (d)  

​ Biscuit : ​ (e)  

• 2 cm
• 4 cm
• 3 cm
• 5 cm
• 7 cm
• 9 cm
• 14 cm
• 6 cm

Jane has 4 ribbons.

She needs to use 2 ribbons to tie presents.

She needs to use 95 cm of ribbon in total.

Circle the 2 ribbons Jane needs to use to tie her presents.

Answer explanation

75 cm + 20 cm = 95 cm