问题
解答题
用整千估算、计算
3196+5260+2831.
答案
3196+5260+2831,
≈8000+2800,
≈10800;
3196+5260+2831,
=8456+2831,
=11287;
用整千估算、计算
3196+5260+2831.
3196+5260+2831,
≈8000+2800,
≈10800;
3196+5260+2831,
=8456+2831,
=11287;