Step 1 / 6
Take away the ones first
★★★Take 4 from 14 first to reach 10.
Cloud Bridge · Learn first
Example
Take away the ones first. What is left?
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Answer: 10
Steps in this unit · Use 10 to subtract
Use 10 to subtract · Numbers & Operations
When the ones are not enough, as in 14 − 9, use the 10. This is the idea behind borrowing.
Take 4 from 14 first to reach 10.
This is step 1 of unit 42, “Use 10 to subtract”, in Stage 2: Numbers to 100, carrying and borrowing (ages 7–8). A round has 10 problems; 90% or better earns three stars. Everything is free with no sign-up, and your stars and XP are saved on this device.