Page 10 - Matematika SD-MI Kelas 5. Bab 1PART

5. 25 × (17 – 7) = (25 × ...) – (25 × 7) = ....
6. (30 – 10 ) × 5 = (... × 5) – (10 × 5) = ....
7. (40 – 25 ) × 15 = (... × 15) – (25 × 15) = ....
8. (35 – 5 ) × 4 = (35 × 4) – (... × 4) = ....
9. (96 – 19 ) × 9 = (96 × 9) – (... × 9) = ....
10. (45 – 35 ) × 13 = (45 × 13) – (... × 13) = ....
11. (20 – ...) × 11 = ( 20 × 11) – (8 × 11) = ....
12. (25 – ...) × 7 = ( 25 × 7) – (15 × 7) = ....
13. (... – 4 ) × 6 = ( 15 × 6) – (4 × 6) = ....
14. (... – 10 ) × 12 = ( 25 × 12) – (10 × 12) = ....
15. 30 × (100 – ...) = ( 30 × 100) – (30 × 25) = ....

B. Membulatkan Bilangan

Pernahkan kamu mengukur tinggi badan?
Coba perhatikan.

Hasil pengukuran badan Sinta 90 cm lebih
2 mm = 90,2 cm.
Pembulatannya = 90 cm

Gambar 1.3 mengukur badan
Hasil penimbangan 3 karung beras =
168 kg
Pembulatannya 170 kg

Gambar 1.4 menimbang beras
Dari penjelasan di atas, kamu dapat membulatkan bilangan ke satuan,
puluhan, ratusan, atau ribuan terdekat.

10 Matematika V/1