School: Math

Some facts we should know

Math
Some facts we should know

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10+10=20
10+6=16
11+11=22
12+12=24
13+13=26
14+14=28
15+15=30
16+16=32
17+17=34
18+18=36
19+19=38
20+20=40
25=25=50
3+3=6
3+3=6
3+4=7
30+40=70
33+33=66
40+2=42
50+25=75
50+50=100
7+8=15
75+25=100
8+7=15
I R X R 1 0 + 1 0 = 2 0 W E 7
A 2 0 + 2 0 = 4 0 + 2 = 4 2 =
8 E J 1 3 + 1 3 = 2 6 3 D E 4
N 3 N 0 U T B E D M = K W P +
T 3 = 3 0 + 4 0 = 7 0 F H H 3
P + R 9 R 1 6 + 1 6 = 3 2 R F
C 3 X L 1 5 = + I W R E R X F
2 3 M M J + 7 5 0 + 2 5 = 7 5
2 = H J L 1 9 D 2 C J D N L T
= 6 I C O 5 K 1 2 + 1 2 = 2 4
1 6 0 0 1 = 0 5 + 0 5 R P W J
1 6 = 3 + 3 5 1 = 8 + 7 = 1 5
+ Y G J X 0 1 4 + 1 4 = 2 8 V
1 0 5 = 5 2 = 5 2 S Y W A A G
1 8 + 1 8 = 3 6 1 = 6 + 0 1 W
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