Number (add/sub)

Lesson

You may have seen a bit of addition with 3 digit numbers already, or tried adding 3 numbers at once. Now you'll combine the two strategies to add 3 numbers that include larger 3 digit numbers.

You may wish to review strategies of adding across the 100 if you haven't done so already. Then, watch the video to see how to add a three digit, two digit, and single digit number all at once. Do you think these tricks make adding much easier?

Evaluate $600+90+7$600+90+7

Find the value of $440+22+7$440+22+7.

Evaluate $556+21+1$556+21+1.