( 1 14+ 166)÷35 432÷(9×8) 189-60+40
Third, simple calculation.
2 16+305 25×32 47+236+64
6×( 15×9) 402+359 43+78+ 122+257
25×(26×4) 25×44 354+(229+46)
( 1)9.26-4.38-2.62
(2)9.26-(4.38+2.26)
(3)9.26-(4.38-2.74
( 1)4.75-9.64+8.25- 1.36
(2) 14.529+(2.47 1-3)
(3)38.68-(4.7-2.32)
4 15- 176-24 8.29+3.7+0.7 1+6.3
125×89×8 428 ×78+572×78
3. Recursive equation calculation.
15×27-3000÷25 2 16+64×42÷28 (324-285) × 12÷26
( 1)60506- 19460÷35
(2)23072÷4 12×65
(3) 184×38+ 1 16×38- 1 1300
(4)(7969 1-46354)÷629
(5)325÷ 13×(266-250)
( 1) 1.9÷(43.26+6.74)×3 (2) 17.8+6.3÷(3.2- 1.6)
(3)0.4×(3.2-0.8)÷ 1.2 (4) 5×[(3.2+4.06)÷6.05]
(5)68-( 188.3- 107.3)÷0.8 1÷0.9 (6)20.5+ 1.4×4÷0.4
45-30÷5=
200÷(25×4)=
40+60×2=
0× 140+60=
First, calculate and check the problem.
1. 100.485+72.68
4.40.043- 12.87
Second, use a simple method to calculate.
1. 125×560
2.45×7 1+29×45
3. 13.6×8× 125
4. 13.6-4.25-5.75+6.4
. 18.3-6.25-3.75+ 12.7
2.64× 10 1
3.25× 125×40×8
4.73× 18+83×73
5. Calculate the following questions.
1.0.6+0.94-0.208
2.24.63-(4.63- 1.85)
3.(64-224÷ 14)× 12
4. 1204×(38+405÷27)
①387 1-( 1080-740)×7 ②5 175÷207+ 102×9
③0.9+ 1.08+0.92+0. 1 ④ 13.59-6.9 1-0.09
⑤983×(3.8+2.2)+0.237× 1000
⑥0.8×(35+65)×5÷ 100
⑦30-[ 17.8+(6.2+38÷ 10)]
1. 10-5.4-4.6 = 2.6-(2.4+2.2)X6
26×39+6 1×26
356×9-56×9
52×76+47×76+76
134×56- 134+45× 134
Special exercise for simple calculation of decimal multiplication and division
1.25×32×0.25 4.7× 1.25× 1.6 2.5×( 13×4)
1.25×88 1.25×64×0.25 4.6×0.35+4.6×0.65
0.95×8.6-7.6×0.95 2.4× 1.87-2.4×0.87 4. 18+4. 18×99
2.55× 1.5+ 1.5+6.45× 1.5 2.95× 10 1-2.95 2.4-2.4×0.5
3.2× 10. 1 0.52× 105 0.85×99 99×4.3
Second, off-type calculation.
175-75÷25 68+35× 13 725-( 125+237)
( 1 14+ 166)÷35 432÷(9×8) 189-60+40
Third, simple calculation.
2 16+305 25×32 47+236+64
6×( 15×9) 402+359 43+78+ 122+257
25×(26×4) 25×44 354+(229+46)
1000―7200÷8
1242÷( 103―49)
4032÷(36×2)
75×4+630 376+280÷70
9×60-320 6400÷80-64
2936÷4×4
(4280+3265)÷5
576÷3÷4
2427÷3+ 1995
8323÷4=
3002÷2=
234×3-574÷7 4326÷(6 1-58)
1.84÷7+35×4
2.540÷9-300÷6
3.480÷8+320÷4
4. 120×3-90×2
5.30×4+60×5
6.488÷4-23×4
48÷8×7
3600-458+ 1204
493+25×7
305×(30 1-297)
35×8+43×5
650÷5-328÷4
Simple calculation problems in grade four
184+98 695+202 864- 199 738-30 1
(Simple calculation of addition and subtraction close to integer hundred)
380+476+ 120 (569+468)+(432+ 13 1)
(additive commutative law and the Application of the Law of Association)
256- 147-53 373- 129+29 189-(89+74) 456-(256-36)
(Simple calculation of subtraction, focusing on the handling of operation sign change)
28×4×25 125×32×25 9×72× 125
The application of multiplicative commutative law and associative law focuses on the processing of dividing one factor into two factors.
720÷ 16÷5 630÷42
(Simple calculation of division)
102×35 98×42
(Simple calculation of multiplication close to integer hundred)
26×39+6 1×26 356×9-56×9
99×55+55 78× 10 1-78
52×76+47×76+76 134×56- 134+45× 134
(Application of the Law of Multiplication and Distribution)
48×52×2-4×48
25×23×(40+4)
999×999+ 1999