Phiếu bài tập Học kì 2 Toán lớp 3 (Nâng cao) có đáp án -Tuần 31

$30000\times 3=90000$

$60000÷2=30000$

$11000\times 7=77000$

$24000÷8=3000$

$30000\times 2=60000$

$20000\times 5=100000$

$13000\times 5=65000$

$21000÷7=3000$

$$\begin{gathered} A=\left(19860+12107\right)\times 2 \\ =31967\times 2 \\ =63934 \end{gathered}$$

$$\begin{gathered} B=98742-6\times 10532 \\ =98742-63192 \\ =35550 \end{gathered}$$

$$\begin{gathered} C=\left(68930-45208\right)\times 3 \\ =23722\times 3 \\ =71166 \end{gathered}$$

$D=12084\times 2+1408$

$=24168+1408$

$=25576$

$$\begin{gathered} 3084+4\times 8234 \\ =3084+32936 \\ =36020 \end{gathered}$$

$$\begin{gathered} 341\times 7-357\times 5 \\ =2387-1785 \\ =602 \end{gathered}$$

$$\begin{gathered} \left(387+623\right)\times 5 \\ =1010\times 5 \\ =5050 \end{gathered}$$

$$\begin{gathered} 680\times \left(812-807\right) \\ =680\times 5 \\ =3400 \end{gathered}$$

$$\begin{gathered} A=\left(15460+40106\right)÷2 \\ =55566÷2 \\ =27783 \end{gathered}$$

$$\begin{gathered} B=8359+72858÷6 \\ =8359+12143 \\ =20502 \end{gathered}$$