1. Why do we break numbers into tens and ones? Choose a two-digit number and explain how partitioning it helps you understand ...
19 is only 1 away from 20, so you prefer to start by multiplying 20 times 5, which equals 100. Then we need to take away a squadron of 5, because there are actually only 19 squadrons, not 20. 100 take ...
Numbers can be shown in many ways, not just as written digits. Explore how to represent numbers using materials such as ...
Results that may be inaccessible to you are currently showing.
Hide inaccessible results