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期中检测
建议用时:6分钟
实际用时:分钟
★期中检测 s
500+60 =
470-400 =
50+60 =
170+490 =
150-70 =
660-70 =
230-80 =
40+300 =
200-80 =
320-130 =
940-30 =
720-430 =
370+20 =
600-300 =
260+400 =
70+900 =
270-50 =
170+60 =
950-410 =
1000-200 =
660+250 =
1000+2000 =
380+590 =
470-390 =
210+60 =
6×1 =
9×8 =
2×3 =
3×4 =
9×4 =
4×5 =
4×8 =
6×7 =
9×5 =
7×7 =
55+85-10 =
71+80-11 =
63+29+15 =
156-56+19 =
334+6+123 =
223+75+9 =
99+65+51 =
334+32+9 =
183-24+46 =
54+346-67 =
建议用时:6分钟
实际用时:分钟
★期中检测 s
500+60 =
470-400 =
50+60 =
170+490 =
150-70 =
660-70 =
230-80 =
40+300 =
200-80 =
320-130 =
940-30 =
720-430 =
370+20 =
600-300 =
260+400 =
70+900 =
270-50 =
170+60 =
950-410 =
1000-200 =
660+250 =
1000+2000 =
380+590 =
470-390 =
210+60 =
6×1 =
9×8 =
2×3 =
3×4 =
9×4 =
4×5 =
4×8 =
6×7 =
9×5 =
7×7 =
55+85-10 =
71+80-11 =
63+29+15 =
156-56+19 =
334+6+123 =
223+75+9 =
99+65+51 =
334+32+9 =
183-24+46 =
54+346-67 =
答案
500+60 = 560
470-400 = 70
50+60 = 110
170+490 = 660
150-70 = 80
660-70 = 590
230-80 = 150
40+300 = 340
200-80 = 120
320-130 = 190
940-30 = 910
720-430 = 290
370+20 = 390
600-300 = 300
260+400 = 660
70+900 = 970
270-50 = 220
170+60 = 230
950-410 = 540
1000-200 = 800
660+250 = 910
1000+2000 = 3000
380+590 = 970
470-390 = 80
210+60 = 270
6×1 = 6
9×8 = 72
2×3 = 6
3×4 = 12
9×4 = 36
4×5 = 20
4×8 = 32
6×7 = 42
9×5 = 45
7×7 = 49
55+85-10 = 130
71+80-11 = 140
63+29+15 = 107
156-56+19 = 119
334+6+123 = 463
223+75+9 = 307
99+65+51 = 215
334+32+9 = 375
183-24+46 = 205
54+346-67 = 333
470-400 = 70
50+60 = 110
170+490 = 660
150-70 = 80
660-70 = 590
230-80 = 150
40+300 = 340
200-80 = 120
320-130 = 190
940-30 = 910
720-430 = 290
370+20 = 390
600-300 = 300
260+400 = 660
70+900 = 970
270-50 = 220
170+60 = 230
950-410 = 540
1000-200 = 800
660+250 = 910
1000+2000 = 3000
380+590 = 970
470-390 = 80
210+60 = 270
6×1 = 6
9×8 = 72
2×3 = 6
3×4 = 12
9×4 = 36
4×5 = 20
4×8 = 32
6×7 = 42
9×5 = 45
7×7 = 49
55+85-10 = 130
71+80-11 = 140
63+29+15 = 107
156-56+19 = 119
334+6+123 = 463
223+75+9 = 307
99+65+51 = 215
334+32+9 = 375
183-24+46 = 205
54+346-67 = 333
拓展园地
答案
在里填上合适的数字。
$\boldsymbol{\begin{array}{r} \boldsymbol{5} \ \boldsymbol{9} \ 8\\ + \ 2 \ 4 \ \boldsymbol{3}\\ \hline 8 \ 4 \ 1\end{array}}$
$\boldsymbol{\begin{array}{r} \boldsymbol{7} \ 6\\ + \ \boldsymbol{6} \ 8 \ \boldsymbol{8}\\ \hline 7 \ 4 \ 6\end{array}}$
$\boldsymbol{\begin{array}{r} \boldsymbol{5} \ \boldsymbol{9} \ 8\\ + \ 2 \ 4 \ \boldsymbol{3}\\ \hline 8 \ 4 \ 1\end{array}}$
$\boldsymbol{\begin{array}{r} \boldsymbol{7} \ 6\\ + \ \boldsymbol{6} \ 8 \ \boldsymbol{8}\\ \hline 7 \ 4 \ 6\end{array}}$
在里填上合适的数字。
答案
$\boldsymbol{\begin{array}{r} \boldsymbol{5} \ \boldsymbol{9} \ 8\\ + \ 2 \ 4 \ \boldsymbol{3}\\ \hline 8 \ 4 \ 1\end{array}}$
$\boldsymbol{\begin{array}{r} \boldsymbol{7} \ 6\\ + \ \boldsymbol{6} \ 8 \ \boldsymbol{8}\\ \hline 7 \ 4 \ 6\end{array}}$
$\boldsymbol{\begin{array}{r} \boldsymbol{7} \ 6\\ + \ \boldsymbol{6} \ 8 \ \boldsymbol{8}\\ \hline 7 \ 4 \ 6\end{array}}$
