1. 23-(8)=......... 2. 27+(-12)-7=...... 3. 5,8 dam +12m+50 dm=......hm 4. Lima satuan ke kiri dari titik 3 adalah....

1. 23 - 8 = 15
2. 27 + (-12) - 7 =
= 27 - 12 - 7
= 27 - (12 + 7)
=27 - 19
= 18

1. 23-(8) = 15
2. 27+(-12)-7 = 27-12-7
= 8
3. 5,8 dam = 5,8/10 = 0,58 hm
12 m = 12/100 = 0,12 hm
50 dm = 50/1000 = 0,05 hm
0,58 hm+0,12 hm+0,05 hm = 0,75 hm
4. -2