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
68 − 10 = ______
76 − 10 = ______
86 + 20 = ______
38 + 20 = ______
32 − 10 = ______
5 × 10 = ______
80 + 10 = ______
81 − 10 = ______
26 − 10 = ______
2 × 10 = ______
46 − 10 = ______
58 − 10 = ______
9 × 10 = ______
94 − 10 = ______
16 + 20 = ______
1 × 10 = ______
19 + 20 = ______
75 + 20 = ______
26 + 10 = ______
74 + 20 = ______
