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 = ______
28 − 10 = ______
6 × 10 = ______
37 − 10 = ______
96 − 10 = ______
84 + 10 = ______
67 − 10 = ______
22 − 10 = ______
85 + 10 = ______
74 − 10 = ______
86 + 20 = ______
88 − 10 = ______
21 − 10 = ______
78 + 10 = ______
43 + 20 = ______
8 × 10 = ______
77 + 10 = ______
51 + 20 = ______
2 × 10 = ______
18 + 20 = ______
