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
29 − 10 = ______
88 + 10 = ______
76 + 20 = ______
3 × 10 = ______
61 + 10 = ______
31 + 10 = ______
84 + 20 = ______
5 × 10 = ______
42 − 10 = ______
83 + 20 = ______
53 + 20 = ______
64 + 10 = ______
74 + 10 = ______
36 − 10 = ______
46 − 10 = ______
43 − 10 = ______
7 × 10 = ______
39 − 10 = ______
65 + 20 = ______
12 + 20 = ______
