Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
72 + 10 = ______
8 × 10 = ______
58 − 10 = ______
75 + 20 = ______
38 − 10 = ______
78 − 10 = ______
61 + 20 = ______
2 × 10 = ______
77 + 20 = ______
79 + 20 = ______
35 + 10 = ______
29 + 10 = ______
30 − 10 = ______
40 − 10 = ______
67 − 10 = ______
61 + 10 = ______
74 + 10 = ______
55 + 20 = ______
49 + 20 = ______
87 + 10 = ______
