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
92 − 10 = ______
42 − 10 = ______
83 − 10 = ______
43 + 10 = ______
75 − 10 = ______
24 − 10 = ______
76 + 20 = ______
20 + 20 = ______
34 + 20 = ______
75 + 10 = ______
87 − 10 = ______
67 + 20 = ______
96 − 10 = ______
73 + 10 = ______
81 + 20 = ______
42 + 20 = ______
64 + 10 = ______
32 − 10 = ______
8 × 10 = ______
16 + 20 = ______
