Cogito
Grade 1 Math · Chapter 10 · Lesson 5
Comparing Numbers to 100
Compare bigger numbers the same way as before.
10 problems · about 12 minutes · 1.NBT.B.3
Figure — use these to answer the problems
73 is greater than 68.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
4 problemsFrom “Counting to 120”
What comes right after 104?
AnswerFrom “Numbers to 100”
How many ones are in 86?
AnswerFrom “Two-Bar Tape Diagrams”
Bars of 15 and 8. What is the difference?
AnswerFrom “How Many More? How Many Fewer?”
10 birds and 6 cats. How many more birds?
Answer
Warm Up
Straightforward practice. Get the method working first.
3 problemsWhich is greater, 38 or 41?
AnswerWhich symbol makes this true: 62 ? 71
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Which is greater, 56 or 65?
Answer
Build It Up
The same ideas with more to keep track of.
1 problemWhich is greater, 91 or 89?
Answer
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
2 problemsWhich symbol makes this true: 47 ? 47
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Two Jars
One jar has 82 beans. Another has 79. Which has more?
Answerbeans