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
79 + 10 = ______
86 + 20 = ______
58 + 10 = ______
43 + 10 = ______
91 − 10 = ______
33 + 10 = ______
84 − 10 = ______
76 + 20 = ______
3 × 10 = ______
12 + 10 = ______
67 + 20 = ______
8 × 10 = ______
2 × 10 = ______
85 − 10 = ______
26 − 10 = ______
17 + 10 = ______
53 + 20 = ______
52 + 20 = ______
81 − 10 = ______
96 − 10 = ______
