Mental maths. Simple level exercises. Яна Малова
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7 SECTION (DOUBLE FIGURES 30+, +30)
30+58 =
61+30 =
30+60 =
30+5 =
30+2 =
30+7 =
30+55 =
8+30 =
30+8 =
30+16 =
30+61 =
64+30 =
30+17 =
30+19 =
30+50 =
62+30 =
30+14 =
63+30 =
30+56 =
30+64 =
30+67 =
30+11 =
30+3 =
30+68 =
1+30 =
30+59 =
5+30 =
30+51 =
30+9 =
4+30 =
30+66 =
30+52 =
57+30 =
6+30 =
17+30 =
7+30 =
30+13 =
9+30 =
10+30 =
55+30 =
30+65 =
12+30 =
3+30 =
13+30 =
14+30 =
69+30 =
15+30 =
52+30 =
2+30 =
16+30 =
18+30 =
50+30 =
30+10 =
51+30 =
30+12 =
30+15 =
11+30 =
30+6 =
30+1 =
60+30 =
30+4 =
30+63 =
53+30 =
68+30 =
30+62 =
54+30 =
30+53 =
30+69 =
56+30 =
30+57 =
30+18 =
19+30 =
58+30 =
30+54 =
59+30 =
65+30 =
66+30 =
67+30 =
8 SECTION (DOUBLE FIGURES 40+, +40)
4+40 =
40+1 =
51+40 =
40+6 =
40+7 =
40+2 =
40+3 =
58+40 =
40+4 =
40+9 =
3+40 =
40+50 =
53+40 =
40+52 =
40+8 =
40+53 =
55+40 =
40+51 =
40+54 =
57+40 =
40+58 =
5+40 =
9+40 =
50+40 =
40+57 =
40+55 =
6+40 =
7+40 =
8+40 =
52+40 =
40+59 =
1+40 =
40+56 =
54+40 =
2+40 =
56+40 =
40+5 =
59+40 =
9 SECTION (DOUBLE FIGURES 50+, +50)
50+26 =
21+50 =
50+2 =
22+50 =
50+27 =
15+50 =
30+50 =
50+24 =
17+50 =
23+50 =
50+13 =
50+18 =
50+30 =
24+50 =
50+3 =
50+12 =
50+29 =
50+4 =
50+5 =
50+31 =
50+6 =
50+8 =
50+10 =
16+50 =
50+11 =
50+14 =
50+37 =
50+16 =
50+7 =
46+50 =
50+9 =
2+50 =
50+28 =
50+23 =
10+50 =
50+32 =
3+50 =
47+50 =
48+50 =
50+17 =
50+19 =
50+20 =
1+50 =
50+21 =
50+22 =
50+1 =
50+25 =
28+50 =
50+15 =
29+50 =
50+33 =
50+34 =
33+50 =
37+50 =
8+50 =
50+43 =
38+50 =
14+50 =
39+50 =
50+35 =
34+50 =
49+50 =
50+36 =
50+42 =
12+50 =
50+44 =
50+46 =
50+38 =
4+50 =
50+40 =
50+47 =
50+45 =
50+39 =
5+50 =
36+50 =
50+48 =
50+49 =
9+50 =
44+50 =
11+50 =
41+50 =
26+50 =
6+50 =
13+50 =
19+50 =
50+41 =
20+50 =
45+50 =
7+50 =
25+50 =
43+50 =
18+50 =
27+50 =
31+50 =
32+50 =
35+50 =
40+50 =
42+50 =