ABE Math Tutorials/Whole numbers/Introduction/Addition and Subtraction Facts

Addition and subtraction facts

This is the first lesson to go over your preknowledge on basic addition and subtraction.

Self Assessment

What are good solid arithmetic skills? Having good arithmetic skills means that you are able to do basic adding, subtracting, multiplying and dividing; quickly, "in your head", from memory. You should be able to answer the following questions like these from memory, without having to figure them out each time. On a piece of paper, write down the question number and your answer.

Pen to paper, image courtesy of wader, on Flickr

1	4 + 8 =
2	20 ÷ 5 =
3	7 x 3 =
4	11 - 6 =
5	3 + 9 =
6	8 x 5 =
7	14 - 9 =
8	48 ÷ 6 =
9	4 x 8 =
10	7 + 5 =
11	64 ÷ 8 =
12	16 - 7 =
13	12 - 4 =
14	2 x 6 =
15	72 ÷ 9 =
16	7 + 7 =
17	9 x 6 =
18	11 - 9 =
19	8 + 6 =
20	35 ÷ 5 =

Mark yourself: Ready for the answers? Here they are: (1)12; (2)4; (3)21; (4)5; (5)12; (6)40; (7)5; (8)8; (9)32; (10)12; (11)8; (12)9; (13)8; (14)12; (15)8; (16)14; (17)54; (18)2; (19)14; (20)7.