Addition
679 + 568 =
1247
100 - 20 =
80
5 x 5 =
25
5 ÷ 1 =
5
15 + 45 =
60
How do you subtract without regrouping
You start with the ones place the tens place and on
8 x 9 =
72
80 ÷ 10 =
305 + 405 =
710
109 - 9 =
100
4 x 4 =
16
16 ÷ 4 =
4
1,000 + 50,000 =
51,000
How to subtract with regrouping using standard algorithm
Start in the ones place if you can't subtract what is in the ones place you take a ten, give it to the ones and then you subtract the ones place
Ten times ten equals
One hundred
100 ÷ 50 =
2
109,039 + 20,000
129,039
1 - 3 =
-2
5 × 0 =
0
300 ÷ 10 =
30