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
56 − 10 = ______
80 − 10 = ______
84 + 10 = ______
78 − 10 = ______
7 × 10 = ______
67 + 20 = ______
58 + 10 = ______
83 − 10 = ______
17 + 10 = ______
66 + 10 = ______
41 + 20 = ______
19 + 10 = ______
18 + 20 = ______
87 − 10 = ______
24 + 20 = ______
52 + 20 = ______
62 + 10 = ______
86 − 10 = ______
29 − 10 = ______
9 × 10 = ______
