2 + 3.5 = ?, 6, 4.5, 5.5, 7.5, 1.5 + 4 = ?, 5.5, 4.5, 6.5, 3.5, 3.5 + 2.5 = ?, 5, 6, 7, 6.5, 2.5 + 2 = ?, 4.5, 3.5, 4, 5, 3 + 3 = ?, 5.5, 6.5, 6, 7, 2.5 + 3.5 = ?, 6, 7, 5.5, 6.5, 2 + 2 + 3 = ?, 7, 6, 8, 7.5, 1 + 1 + 3 + 3 = ?, 8, 6, 9, 7, 2.5 + 2.5 + 2.5 = ?, 7.5, 5, 6.5, 7, 2 + 2.5 + 3.5 = ?, 8, 6, 7.5, 8.5, 0.5 + 1.5 + 1.5 = ?, 3.5, 3, 2.5, 4, 2 + 2.5 + 2 + 2.5 = ?, 9, 7, 8.5, 9.5, 0.5 + 0.5 + 0.5 + 0.5 + 0.5 = ?, 2.5, 2, 3, 3.5, 1 + 2 + 1 + 2.5 = ?, 6.5, 5, 5.5, 6, 0.5 + 1.5 + 1 + 0.5 + 1 + 1.5 = ?, 6, 6.6, 5.5, 7

Adding Hours

由
打印
嵌入

排行榜

视觉风格

选项

更像是这样

二年级数学：加法和减法复习题。算一算。
二年级数学：加法和减法复习题。算一算。
由
开箱游戏
Estimating Sums
Estimating Sums
由
随堂测验
Do sums (10-100)
Do sums (10-100)
由
匹配游戏
Mental addition strategy: compensating. Round up numbers like 19 to an 'easy' 20, add it on, then subtract 1 from total.
Mental addition strategy: compensating. Round up numbers like 19 to an 'easy' 20, add it on, then subtract 1 from total.
由
匹配游戏
Estimating Sums and Differences
Estimating Sums and Differences
由
问答游戏
Math Problems (+ & -)
Math Problems (+ & -)
由
随机卡
數學2上8_3經過幾小時
數學2上8_3經過幾小時
由
寻找匹配项
數學1上9_1時間的先後和長短
數學1上9_1時間的先後和長短
由
标记图表

切换模板

恢复自动保存：？