Cogito
Grade 2 Math · Chapter 3 · Lesson 4
Counting to 1,000
Crossing each hundred is the only tricky bit.
10 problems · about 12 minutes · 2.NBT.A.2
Figure — use these to answer the problems
Hundreds
1
Tens
9
Ones
9
Warm-Up Review
From earlier lessons. Loosen up before the new work.
2 problemsFrom “Skip-Counting by 5s, 10s, and 100s”
Counting by 5s: 40, 45, ?
AnswerFrom “Building Numbers to 1,000”
6 hundreds, 0 tens and 3 ones is which number?
Answer
Warm Up
Straightforward practice. Get the method working first.
4 problemsWhat comes after 499?
AnswerWhat comes after 250?
AnswerWhat comes after 399?
AnswerWhat comes after 509?
Answer
Build It Up
The same ideas with more to keep track of.
2 problemsWhat comes after 799?
AnswerWhat comes before 700?
Answer
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
2 problemsCounting Steps
Ana has counted 299 steps. What is the next number?
AnswerNearly There
A counter shows 649. What comes next?
Answer