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
85 + 20 = ______
2 × 10 = ______
5 × 10 = ______
28 + 10 = ______
73 − 10 = ______
3 × 10 = ______
1 × 10 = ______
18 + 20 = ______
9 × 10 = ______
8 × 10 = ______
65 + 10 = ______
46 + 10 = ______
44 − 10 = ______
41 − 10 = ______
7 × 10 = ______
76 − 10 = ______
26 − 10 = ______
67 + 20 = ______
80 − 10 = ______
14 + 20 = ______
