小数位值(9岁以上)
Decimal place value (age 9+)
会把有两位小数的数四舍五入到最接近的整数,并保留一位小数。
Round decimals with two decimal places to the nearest whole number and to one decimal place
学习证据 / Evidence
- 将3.47四舍五入到最接近的整数(3),并保留一位小数(3.5)。
- 将12.95保留一位小数(13.0),并解释这个边界情况。
- 把4.83和2.17分别四舍五入到最接近的整数,再估算4.83 + 2.17的和。
- Round 3.47 to the nearest whole number (3) and to 1 d.p. (3.5)
- Round 12.95 to 1 d.p. (13.0) and explain the boundary case
- Estimate 4.83 + 2.17 by rounding each to the nearest whole number
评估问题 / Assessment
如果{{name}}量得一段长度为4.67米,能把它四舍五入到最接近的整米数吗?也能四舍五入到最接近的十分之一米吗?
If {{name}} measures a length as 4.67 m, can they round it to the nearest whole metre — and also to the nearest tenth of a metre?