Longer Than, Shorter Than

Line them up at the same end first.

10 problems · about 10 minutes · 1.MD.A.1

NameDate

Figure — use these to answer the problems

Change either ribbon. They always start at the same edge.

Red ribbon

Blue ribbon

Red7

Blue5

Figure 1

From earlier lessons. Loosen up before the new work.

7 problems

1
From “True or False to Twenty”
Is 13 − 9 = 2 + 2 true?
- True. Both are 4.
- False.
From “Missing Numbers to Twenty”
8 + ? = 12
Answer
From “Take From Ten in Stories”
11 − 8 = ?
Answer
From “Taking From Ten”
13 − 9 = ?
Answer
From “Counting On or Making Ten?”
8 + 2 = ?
Answer
From “Start With the Bigger One”
6 + 9 = ?
Answer
From “Making Ten From Eight”
8 + 5 = ?
Answer

Straightforward practice. Get the method working first.

2 problems

8
Why must you line up one end before comparing?
- Otherwise you cannot tell which is longer.
- To make it look neat.
A rope is 9 cubes. A string is 6 cubes. How much longer is the rope?
Answercubes

Mixed problems. Work out what kind of question it is before you start.

1 problem

10
Two Sticks
A red stick is 8 cubes long. A blue stick is 5 cubes. Which is longer?
- The red stick.
- The blue stick.