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
99 − 10 = ______
32 − 10 = ______
36 + 10 = ______
42 + 10 = ______
16 + 10 = ______
76 + 20 = ______
61 + 10 = ______
40 + 10 = ______
3 × 10 = ______
31 − 10 = ______
85 + 20 = ______
67 + 20 = ______
65 + 10 = ______
51 − 10 = ______
40 − 10 = ______
81 − 10 = ______
67 − 10 = ______
84 + 10 = ______
67 + 10 = ______
6 × 10 = ______
