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
34 − 10 = ______
65 + 20 = ______
45 − 10 = ______
68 + 20 = ______
42 − 10 = ______
75 − 10 = ______
79 + 10 = ______
64 − 10 = ______
46 + 20 = ______
86 + 20 = ______
22 + 10 = ______
23 + 10 = ______
2 × 10 = ______
36 + 10 = ______
69 + 10 = ______
81 + 20 = ______
29 + 10 = ______
9 × 10 = ______
44 − 10 = ______
26 + 10 = ______
