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
58 + 20 = ______
75 − 10 = ______
74 + 10 = ______
3 × 10 = ______
9 × 10 = ______
41 − 10 = ______
86 + 20 = ______
67 + 10 = ______
6 × 10 = ______
72 − 10 = ______
66 − 10 = ______
55 − 10 = ______
70 + 20 = ______
31 − 10 = ______
99 − 10 = ______
45 + 20 = ______
20 + 10 = ______
5 × 10 = ______
29 − 10 = ______
52 + 10 = ______
