Berikut ini saya sajikan beberapa soal pengayaan Matematika untuk SD dan semoga bermanfaat untuk Anda. Mohon maaf kiranya soal masih dalam bentuk bahasa Inggris dan belum ada pembahasannya. Selamat berlatih dan berjuang !
1. There are four kinds of dollar-notes (or dollar-bills) of value $1, $5, $10, and $50 respectively. There is a total of nine dollar-notes, with at least one dollar-note of each kind. If the total value of these dollar-notes is $177, how many $10 dollar-notes are there ?
2. A bus starts from town A to town B and another bus starts from town B to town A on the same road. They run with constant speed to their destinations and back home without stopping. The buses pass by each other for the first time at 700 km (kilometers) from town A and they pass by each other for the second time on the way back at 400 km from town B. How many km is it from town A to town B?