(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
(Comprehensive application of the laws of multiplication and distribution)
158+262+ 138 375+2 19+38 1+225 500 1-247- 102 1-232
( 18 1+2564)+27 19 378+44+ 1 14+242+222 276+228+353+2 19
(375+ 1034)+(966+ 125) (2 130+783+270)+ 10 17 99+999+9999+99999
7755-(2 187+755) 22 14+638+286 3065-738- 1065 899+344
2357- 183-3 17-357 2365- 1086-2 14 497-299 2370+ 1995
3999+498 1883-398 12×25 75×24
138×25×4 ( 13× 125)×(3×8) ( 12+24+80)×50 704×25
25×32× 125 32×(25+ 125) 88× 125 102×76 58×98
178× 10 1- 178 84×36+64×84 75×99+2×75 83× 102-83×2
98× 199 123× 18- 123×3+85× 123 50×(34×4)×3 25×(24+ 16)
178×99+ 178 79×42+79+79×57 7300÷25÷4 8 100÷4÷75
16800÷ 120 30 100÷2 100 32000÷400 49700÷700
1248÷24 3 150÷ 15 4800÷25 2 1500÷ 125
158+262+ 138
375+2 19+38 1+225
500 1-247- 102 1-232
( 18 1+2564)+27 19
378+44+ 1 14+242+222
276+228+353+2 19
(375+ 1034)+(966+ 125)
(2 130+783+270)+ 10 17
99+999+9999+99999
7755-(2 187+755)
22 14+638+286
3065-738- 1065
899+344
2357- 183-3 17-357
2365- 1086-2 14
497-299
2370+ 1995
3999+498
1883-398
12×25
75×24
138×25×4
( 13× 125)×(3×8)
( 12+24+80)×50
704×25
25×32× 125
32×(25+ 125)
88× 125
102×76
58×98
178× 10 1- 178
84×36+64×84 75×99+2×75
83× 102-83×2
98× 199
123× 18- 123×3+85× 123
50×(34×4)×3
25×(24+ 16)
178×99+ 178
79×42+79+79×57
7300÷25÷4
8 100÷4÷75
16800÷ 120
30 100÷2 100
32000÷400
49700÷700
1248÷24
3 150÷ 15
4800÷25
2 1500÷ 125
2356-( 1356-72 1)
1235-( 1780- 1665)
75×27+ 19×2 5
3 1×870+ 13×3 10
4×(25×65+25×28)
(a+b)+ c = a +(b+c)
2.73 + 0.89 + 1.27
4.37 + 0.28 + 1.63 + 5.72
a-b-c = a -(b+c)
10 - 0.432 - 2.568
9.3 - 5.26 - 2.74
13.4-(3.4+5.2)
14.9-(5.2+4.9)
18.32 - 5.47 - 4.32
17.29 - 5.28 - 6.29
(a × b)×c = a ×(b × c)
25 × 6.8 × 0.04
0.25 × 32 × 0. 125
6.4 × 1.25 × 12.5
c ×(a+b)= ca + cb
0.45 × 20 1
0.58 × 10. 1
50.2 × 99
4.7 × 9.9
3.28 × 5.7 + 6.72 × 5.7
2. 1 × 99 + 2. 1
1.7 × 9.9 + 0. 17
23 × 0. 1 + 2.3 × 9.9
0. 18 +4.26 -0. 18 +4.26 ☆
0.58 × 1.3 ÷ 0.58 × 1.3 ☆
7.3 ÷4 + 2.7 × 0.25 ☆
3.75 × 0.5 - 2.75 ÷ 2 ☆
5.26 × 0. 125 + 2.74 ÷ 8 ☆
a ÷ b ÷ c = a ÷ (b × c) 6.3 ÷ 1.8
9.5 ÷( 1.9 × 8)
12.8 ÷ (0.4 × 1.6)
930 ÷ 0.6 ÷5
63.4 ÷ 2.5 ÷ 0.4
(7.7 + 1.54)÷ 0.7 ☆
( 1 1.7 + 9.9)÷ 0.9 ☆
Simple calculation (addition and subtraction)
6.9+4.8+3. 1
15.89+(6.75-5.89)
7.85+2.34-0.85+4.66
35.6- 1.8- 15.6-7.2
13.75-(3.75+6.48)
47.8-7.45+2.55
66.86-8.66- 1.34
Multiplication and division method: 0.25× 16.2×4.
0.25×32 ×0. 125
2 .5 ×(4 +0.4) ( 1.25-0. 125)×8
4.8× 100. 1
4.2×99
56.5×9.9+56.5
5.4× 1 1-5.4
3.83×4.56+3.83×5.44
7.09× 10.8-0.8×7.09
3.65×4.7-36.5×0.37
13.7×0.25-3.7÷4
10.7× 16. 1- 1. 1× 10.7 + 10.7 ×5
4.9÷ 1.4
3.9÷( 1.3×5)
63.4÷2.5÷0.4
(7.7+ 1.4)÷0.7
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