Grade 1 · Set C · Side 1 of 2
Ten more, ten less
C
Start Finish
Goal: 10 min for both sides
Score/ 48
Remember: Ten more or ten less moves the tens digit. The ones stay.
1ten less than 91 is
2ten less than 97 is
3ten less than 78 is
4ten less than 47 is
5ten less than 74 is
6ten less than 48 is
7ten less than 43 is
8ten less than 33 is
9ten less than 23 is
10ten less than 87 is
11ten less than 98 is
12ten less than 28 is
13ten less than 64 is
14ten less than 76 is
15ten less than 29 is
16ten less than 79 is
17ten less than 72 is
18ten less than 45 is
19ten less than 88 is
20ten less than 92 is
21ten less than 99 is
22ten less than 22 is
23ten less than 77 is
24ten less than 58 is
Grade 1 · Set C · Side 2 of 2
Ten more, ten less
C
Start Finish
Goal: 10 min for both sides
Score/ 48
25ten less than 69 is
26ten less than 42 is
27ten less than 83 is
28ten less than 80 is
29ten less than 95 is
30ten less than 93 is
31ten less than 70 is
32ten less than 81 is
33ten less than 96 is
34ten less than 89 is
35ten less than 90 is
36ten less than 20 is
37ten less than 27 is
38ten less than 32 is
39ten less than 60 is
40ten less than 86 is
41ten less than 82 is
42ten less than 25 is
43ten less than 57 is
44ten less than 49 is
45ten less than 35 is
46ten less than 44 is
47ten less than 94 is
48ten less than 36 is
Answer key · Grade 1 · Set C
Ten more, ten less
181
287
368
437
564
638
733
823
913
1077
1188
1218
1354
1466
1519
1669
1762
1835
1978
2082
2189
2212
2367
2448
2559
2632
2773
2870
2985
3083
3160
3271
3386
3479
3580
3610
3717
3822
3950
4076
4172
4215
4347
4439
4525
4634
4784
4826
Mark each answer, count the right ones and write the score on the sheet. Beat your own time next time.