Brainteen
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儿童免费
混合运算
算出得数。
- 6–9 岁
- 数学
- 学习单
课程标准关联
- Common Core 2.OA.B.2: Add and subtract fluently within 20 using mental strategies, and know all sums of two one-digit numbers from memory.
- Common Core 3.OA.C.7: Multiply and divide fluently within 100 and know all products of two one-digit numbers from memory by the end of Grade 3.
- England NC Y2.MA.ASN.2: Recall and use addition and subtraction facts to 20 fluently, and derive related facts up to 100.
- England NC Y3.MA.MD.2: Write and calculate multiplication and division statements using the tables they know, including two-digit times one-digit.
- BNCC EF03MA03: Build and use basic addition and multiplication facts for mental or written calculation.
- Programmes FR C2.MA.NC.3: Mental calculation: know and use addition and subtraction facts.
许可协议：Crayonbird original
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